--- title: OptoBlog | Firmware description: Firmware | --- - [Log in](https://www.opto22.com/logon?returnurl=%2f) - [Register](https://www.opto22.com/Special-Pages/Logon.aspx) - [Your Cart](https://www.opto22.com/Checkout/Shopping-Cart) - [Contact Us](https://www.opto22.com/support/contact-us) [![Opto 22 Logo](https://blog.opto22.com/hubfs/opto22_lightsilvergradient_800px.png "Opto 22 Logo")](https://www.opto22.com) - [Products](https://www.opto22.com/products) - [What Do You Want to Do?](https://www.opto22.com/products/what-do-you-want-to-do) - [groov RIO](https://www.opto22.com/products/groov-rio) - [groov EPIC System](https://www.opto22.com/products/groov-epic-system) - [Case Studies](https://www.opto22.com/products/groov-case-studies) - [Product Selector](https://www.opto22.com/products/product-selector) - [Product Families](https://www.opto22.com/products/product-families) - [IIoT System Architecture](https://www.opto22.com/support/resources-tools/demos/groov-epic-groov-rio-architecture) - 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[System Configurator](https://www.opto22.com/products/system-configurator) - [Support](https://www.opto22.com/support) - [Manage groov](https://www.opto22.com/logon?returnurl=%2fmy-opto%2fmanage-groov) - [Documents](https://www.opto22.com/Support/Resources-Tools?rt=59) - [Downloads](https://www.opto22.com/Support/Resources-Tools?rt=68) - [Videos](https://www.opto22.com/Support/Videos) - [KnowledgeBase](https://www.opto22.com/Support/Resources-Tools?rt=67) - [Training](https://www.opto22.com/support/training-options) - [Troubleshooting](https://www.opto22.com/support/troubleshooting) - [Image Library](https://www.opto22.com/support/resources-tools/image-library-svg-editors) - [Developers](https://developer.opto22.com/) - [Talk to an Engineer](https://www.opto22.com/support/talk-to-an-engineer) - [Contact Us](https://www.opto22.com/support/contact-us) - [Warranties](https://www.opto22.com/support/warranties) - [Agency Approvals/Compliance](https://www.opto22.com/support/agency-approvals) - [Privacy Policy](https://www.opto22.com/support/privacy) - [About Us](https://www.opto22.com/about-us) - [History](https://www.opto22.com/about-us/history) - [Location](https://www.opto22.com/about-us/directions) - [Corporate Contacts](https://www.opto22.com/about-us/corporate-contacts) - [Opto 22 Product Philosophy](https://www.opto22.com/about-us/opto-22-product-philosophy) - [Customer Quotes/Testimonials](https://www.opto22.com/about-us/customer-quotes-testimonials) - [Virtual Tour](https://www.opto22.com/about-us/virtual-tour) - [Pressroom](https://www.opto22.com/about-us/pressroom) - [Distributors](https://www.opto22.com/about-us/distributors) - [International](https://www.opto22.com/about-us/international) - [Sustainability](https://www.opto22.com/about-us/sustainability) - [Careers](https://www.opto22.com/about-us/careers) - [Community](https://www.opto22.com/community) - [OptoPartners](https://www.opto22.com/community/opto-partners) - [Technology Partners](https://www.opto22.com/community/technology-partners) - [Education Partnerships](https://info.opto22.com/partnering-in-education) - [Opto Blog](https://blog.opto22.com/) - [Opto Forums](http://forums.opto22.com/) - [Events](https://www.opto22.com/community/events) - [Articles](https://www.opto22.com/articles) - [Log In](https://www.opto22.com/logon) - [Register](https://www.opto22.com/Special-Pages/Logon.aspx) - [Your Cart](https://www.opto22.com/Checkout/Shopping-Cart) - [Contact Us](https://www.opto22.com/support/contact-us)   # OptoBlog # OptoBlog ## [Stay up to date with SNAP PAC firmware R10.7c](https://blog.opto22.com/optoblog/stay-up-to-date-with-snap-pac-firmware-r10.7c) Posted by [Janice Colmer](https://blog.opto22.com/optoblog/author/janice-colmer) on Sep 29, 2026, 10:04:50 AM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/snap-pac-r1_p-1.png)](https://blog.opto22.com/optoblog/stay-up-to-date-with-snap-pac-firmware-r10.7c) ### The latest firmware release is now available for your SNAP PAC System. If you are using any of the following SNAP PAC System controllers or brains, you'll want to take a look at the new R10.7c update:  [SNAP PAC R-series](https://www.opto22.com/products/product-selector?keyword=&c1=&c2=&tag=1560,1514&approval=&numres=25&page=1&leg=0&obs=0) [SNAP PAC S-series](https://www.opto22.com/products/product-selector?keyword=&c1=&c2=&tag=1560,1572&approval=&numres=25&page=1&leg=0&obs=0) [SoftPAC](https://www.opto22.com/products/softpac) [G4EB2 brains](https://www.opto22.com/products/product-selector?keyword=g4eb2&c1=&c2=&tag=&approval=&numres=25&page=1&leg=0&obs=0) See the latest fixes covered in this release. [Read More](https://blog.opto22.com/optoblog/stay-up-to-date-with-snap-pac-firmware-r10.7c) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/stay-up-to-date-with-snap-pac-firmware-r10.7c#comments-listing) Topics: [Firmware](https://blog.opto22.com/optoblog/topic/firmware), [PAC Control](https://blog.opto22.com/optoblog/topic/pac-control), [snap pac](https://blog.opto22.com/optoblog/topic/snap-pac), [SoftPAC](https://blog.opto22.com/optoblog/topic/softpac) ## [New groov EPIC and RIO firmware 4.1.3 available now](https://blog.opto22.com/optoblog/new-groov-epic-and-rio-firmware-4.1.3-is-available-now) Posted by [Dan White](https://blog.opto22.com/optoblog/author/dan-white) on Sep 2, 2026, 11:11:18 AM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/social-suggested-images/www.designworldonline.comwp-contentuploadsgroovRIO-groveEPIC.jpg)](https://blog.opto22.com/optoblog/new-groov-epic-and-rio-firmware-4.1.3-is-available-now) ### A maintenance release: a few enhancements, one security patch, an updated Java runtime, current Ignition and Cirrus Link versions, and some bug fixes. If you use or plan to use *groov* hardware, you’ll want to be aware of this small but important firmware release. Firmware 4.1.3 handles upkeep and a few small enhancements: a web server security patch, current Ignition and Cirrus Link versions, and fixes for hostname registration, backup restores, and USB port control. It’s available for every ***groov* EPIC** and ***groov* RIO** device ever shipped! Here's what's in it and what each item means for your application. [Read More](https://blog.opto22.com/optoblog/new-groov-epic-and-rio-firmware-4.1.3-is-available-now) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/new-groov-epic-and-rio-firmware-4.1.3-is-available-now#comments-listing) Topics: [Updates](https://blog.opto22.com/optoblog/topic/updates), [Firmware](https://blog.opto22.com/optoblog/topic/firmware), [groov EPIC](https://blog.opto22.com/optoblog/topic/groov-epic), [groov RIO](https://blog.opto22.com/optoblog/topic/groov-rio) ## [Stay up to date with SNAP PAC firmware R10.7a](https://blog.opto22.com/optoblog/stay-up-to-date-with-snap-pac-firmware-r10.7a) Posted by [Janice Colmer](https://blog.opto22.com/optoblog/author/janice-colmer) on Jun 10, 2026, 6:18:39 AM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/snap-pac-r1_p-1.png)](https://blog.opto22.com/optoblog/stay-up-to-date-with-snap-pac-firmware-r10.7a) ### The latest firmware release is now available for your SNAP PAC System. If you are using any of the following SNAP PAC System controllers or brains, you'll want to take a look at the new R10.7a update:  [SNAP PAC R-series](https://www.opto22.com/products/product-selector?keyword=&c1=&c2=&tag=1560,1514&approval=&numres=25&page=1&leg=0&obs=0) [SNAP PAC S-series](https://www.opto22.com/products/product-selector?keyword=&c1=&c2=&tag=1560,1572&approval=&numres=25&page=1&leg=0&obs=0) [SoftPAC](https://www.opto22.com/products/softpac) [G4EB2 brains](https://www.opto22.com/products/product-selector?keyword=g4eb2&c1=&c2=&tag=&approval=&numres=25&page=1&leg=0&obs=0) See the latest enhancements and important fixes included in this release. [Read More](https://blog.opto22.com/optoblog/stay-up-to-date-with-snap-pac-firmware-r10.7a) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/stay-up-to-date-with-snap-pac-firmware-r10.7a#comments-listing) Topics: [Firmware](https://blog.opto22.com/optoblog/topic/firmware), [PAC Manager](https://blog.opto22.com/optoblog/topic/pac-manager), [snap pac](https://blog.opto22.com/optoblog/topic/snap-pac) ## [New groov EPIC and RIO firmware 4.1.0 available now](https://blog.opto22.com/optoblog/new-groov-epic-and-rio-firmware-4.1.0-available-now) Posted by [Dan White](https://blog.opto22.com/optoblog/author/dan-white) on Mar 11, 2026, 9:31:06 AM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/social-suggested-images/www.designworldonline.comwp-contentuploadsgroovRIO-groveEPIC.jpg)](https://blog.opto22.com/optoblog/new-groov-epic-and-rio-firmware-4.1.0-available-now) ### The 4.1 *groov* firmware release is now available and offers more control, greater security, and fewer barriers. If you use, or plan to use, *groov* hardware, this update improves what you can do without adding hardware, software licenses, or external tools. And it’s available for every ***groov* EPIC** and ***groov* RIO** device ever shipped! Firmware 4.1.0 adds key features: network segmentation on *groov* RIO, serial integration inside CODESYS without licensing, and API-driven fleet management tools. Here is what changed, and why each change is worth your attention.  [Read More](https://blog.opto22.com/optoblog/new-groov-epic-and-rio-firmware-4.1.0-available-now) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/new-groov-epic-and-rio-firmware-4.1.0-available-now#comments-listing) Topics: [Updates](https://blog.opto22.com/optoblog/topic/updates), [Modbus](https://blog.opto22.com/optoblog/topic/modbus), [Firmware](https://blog.opto22.com/optoblog/topic/firmware), [Node-RED](https://blog.opto22.com/optoblog/topic/node-red), [CODESYS](https://blog.opto22.com/optoblog/topic/codesys), [groov EPIC](https://blog.opto22.com/optoblog/topic/groov-epic), [Ignition](https://blog.opto22.com/optoblog/topic/ignition), [groov RIO](https://blog.opto22.com/optoblog/topic/groov-rio) ## [Stay up to date with SNAP PAC firmware R10.6a](https://blog.opto22.com/optoblog/stay-up-to-date-with-snap-pac-firmware-r10.6a) Posted by [Janice Colmer](https://blog.opto22.com/optoblog/author/janice-colmer) on Oct 8, 2025, 9:58:19 AM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/snap-pac-r1_p-1.png)](https://blog.opto22.com/optoblog/stay-up-to-date-with-snap-pac-firmware-r10.6a) #### The latest SNAP PAC firmware release is now available for your SNAP PAC system. If you are using any of the following SNAP PAC system controllers or brains, you'll want to take a look at the new R10.6a update:  [SNAP PAC R-series](https://www.opto22.com/products/product-selector?keyword=&c1=&c2=&tag=1560,1514&approval=&numres=25&page=1&leg=0&obs=0) [SNAP PAC S-series](https://www.opto22.com/products/product-selector?keyword=&c1=&c2=&tag=1560,1572&approval=&numres=25&page=1&leg=0&obs=0) [SoftPAC](https://www.opto22.com/products/softpac) [G4EB2 brains](https://www.opto22.com/products/product-selector?keyword=g4eb2&c1=&c2=&tag=&approval=&numres=25&page=1&leg=0&obs=0) [Read More](https://blog.opto22.com/optoblog/stay-up-to-date-with-snap-pac-firmware-r10.6a) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/stay-up-to-date-with-snap-pac-firmware-r10.6a#comments-listing) Topics: [Firmware](https://blog.opto22.com/optoblog/topic/firmware), [PAC Manager](https://blog.opto22.com/optoblog/topic/pac-manager), [snap pac](https://blog.opto22.com/optoblog/topic/snap-pac) ## [groov EPIC & RIO Firmware 4.0: Future-Ready, Backward-Compatible](https://blog.opto22.com/optoblog/groov-epic-rio-firmware-4.0-future-ready-backward-compatible) Posted by [Dan White](https://blog.opto22.com/optoblog/author/dan-white) on Jun 18, 2025, 7:30:27 AM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/Firmware-40-sq-social%20graphic-20250617-v9-transBG.png)](https://blog.opto22.com/optoblog/groov-epic-rio-firmware-4.0-future-ready-backward-compatible) ### This new firmware release upgrades the foundation of all your *groov* EPIC and RIO devices—without changing what works. Firmware 4.0 transforms the core of every *groov* device we’ve ever shipped, while keeping everything you rely on right where you left it. Learn what's new, along with how and why you should update. [Read More](https://blog.opto22.com/optoblog/groov-epic-rio-firmware-4.0-future-ready-backward-compatible) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/groov-epic-rio-firmware-4.0-future-ready-backward-compatible#comments-listing) Topics: [Updates](https://blog.opto22.com/optoblog/topic/updates), [Firmware](https://blog.opto22.com/optoblog/topic/firmware), [groov EPIC](https://blog.opto22.com/optoblog/topic/groov-epic), [groov RIO](https://blog.opto22.com/optoblog/topic/groov-rio), [groov rio emu](https://blog.opto22.com/optoblog/topic/groov-rio-emu) ## [Update to groov RIO 3.6](https://blog.opto22.com/optoblog/update-to-groov-rio-3.6) Posted by [Ben Orchard](https://blog.opto22.com/optoblog/author/ben-orchard) on Jun 26, 2024, 8:07:00 AM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/3-RIOs_Ignition-Included_Logo.png)](https://blog.opto22.com/optoblog/update-to-groov-rio-3.6) ### Get Enterprise WiFi and several other updates in the latest free firmware download of *groov* RIO. If you have been getting some friction from your IT department about connecting any of the *groov* RIO family to your corporate WiFi network, this firmware update is for you! Just like the [*groov* EPIC firmware update](https://blog.opto22.com/optoblog/update-to-groov-epic-3.6) 3 weeks ago, we have added WPA-2 Enterprise WiFi connectivity to the *groov* RIO [MM1](https://www.opto22.com/products/product-container/grv-r7-mm1001-10), [MM2](https://www.opto22.com/products/product-container/grv-r7-mm2001-10) and [EMU](https://www.opto22.com/products/product-container/grv-r7-i1vapm-3) (Energy Monitoring Unit). This enterprise WiFi configuration complements the existing LDAP (Lightweight Directory Access Protocol) authentication options, which have been part of the RIO for a long time. [Read More](https://blog.opto22.com/optoblog/update-to-groov-rio-3.6) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/update-to-groov-rio-3.6#comments-listing) Topics: [Updates](https://blog.opto22.com/optoblog/topic/updates), [Firmware](https://blog.opto22.com/optoblog/topic/firmware), [groov RIO](https://blog.opto22.com/optoblog/topic/groov-rio), [groov rio emu](https://blog.opto22.com/optoblog/topic/groov-rio-emu) ## [Update to groov EPIC 3.6](https://blog.opto22.com/optoblog/update-to-groov-epic-3.6) Posted by [Ben Orchard](https://blog.opto22.com/optoblog/author/ben-orchard) on May 28, 2024, 8:00:00 AM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/groovEPIC3.6Release.png)](https://blog.opto22.com/optoblog/update-to-groov-epic-3.6) ### Read about the features, enhancements, and various fixes you'll get in the *groov* EPIC 3.6 firmware release. You'll see some really amazing updates this year. Meanwhile, while it's exciting to be working on new hardware and software, we also know that regular updates that address some "pebble in the shoe" discomfort are just as important. Our 3.6.0 firmware release adds a few new features and takes out a few pebbles for some nice quality-of-life improvements.   Let’s do a quick unpacking of this new EPIC firmware release. [Read More](https://blog.opto22.com/optoblog/update-to-groov-epic-3.6) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/update-to-groov-epic-3.6#comments-listing) Topics: [Firmware](https://blog.opto22.com/optoblog/topic/firmware), [Node-RED](https://blog.opto22.com/optoblog/topic/node-red), [CODESYS](https://blog.opto22.com/optoblog/topic/codesys), [groov EPIC](https://blog.opto22.com/optoblog/topic/groov-epic) ## [Firmware updates for I/O modules](https://blog.opto22.com/optoblog/firmware-updates-for-i/o-modules) Posted by [Ben Orchard](https://blog.opto22.com/optoblog/author/ben-orchard) on Jan 10, 2024, 10:46:00 AM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/2modulelights.png)](https://blog.opto22.com/optoblog/firmware-updates-for-i/o-modules) ### New features and improved performance are available on *groov* I/O modules with the click of a button. A well-known electric car company is somewhat famous for its ability to add features and fix bugs with over-the-air updates to millions of cars. Of course, they are not the only ones with this feature. Many companies have been updating their hardware with firmware updates for decades, but it really captures the imagination when the hardware is something you drive. Closer to our hearts and minds, Opto 22 has been adding features and squishing bugs on our controllers for more years than most of us can recall (it's our 50th year in 2024!). There are a few SNAP I/O modules that can have their firmware updated via our PAC Manager program—the serial data ones for example—but now with *groov* EPIC and RIO, ALL our modules can have new features and refined performance added at the click of a button. [Read More](https://blog.opto22.com/optoblog/firmware-updates-for-i/o-modules) 2 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/firmware-updates-for-i/o-modules#comments-listing) Topics: [Firmware](https://blog.opto22.com/optoblog/topic/firmware), [I/O modules](https://blog.opto22.com/optoblog/topic/i-o-modules), [groov EPIC](https://blog.opto22.com/optoblog/topic/groov-epic), [I/O](https://blog.opto22.com/optoblog/topic/i-o), [groov RIO](https://blog.opto22.com/optoblog/topic/groov-rio) ## [groov RIO firmware 3.5 adds control to remote I/O](https://blog.opto22.com/optoblog/groov-rio-firmware-3.5-adds-control-to-remote-i/o) Posted by [Ben Orchard](https://blog.opto22.com/optoblog/author/ben-orchard) on Aug 23, 2023, 9:00:00 AM - [Tweet](https://twitter.com/share) [![](https://blog.opto22.com/hubfs/groovRIO_3_CODESYS-Sparkplug.png)](https://blog.opto22.com/optoblog/groov-rio-firmware-3.5-adds-control-to-remote-i/o) ### The latest *groov* RIO 3.5 firmware update offers a CODESYS programming option along with enhancements for performance and security. *groov* RIO firmware 3.5 is here! And the big news is the CODESYS runtime engine has been added. That means now you can run a control program on *groov* RIO—one you build in CODESYS using any of the IEC 61131-3 compliant languages. The engineers have kept their fingers on the keyboard here at Opto HQ and are beyond excited about the release of version 3.5 firmware for the *groov* RIO family. We can't wait to see what applications our awesome customers come up with, now that the CODESYS runtime engine has been added to the complete [*groov* RIO Trio](https://www.opto22.com/products/groov-rio/groov-rio-models). [Read More](https://blog.opto22.com/optoblog/groov-rio-firmware-3.5-adds-control-to-remote-i/o) 0 Comments [Click here to read/write comments](https://blog.opto22.com/optoblog/groov-rio-firmware-3.5-adds-control-to-remote-i/o#comments-listing) Topics: [Updates](https://blog.opto22.com/optoblog/topic/updates), [Firmware](https://blog.opto22.com/optoblog/topic/firmware), [CODESYS](https://blog.opto22.com/optoblog/topic/codesys), [Sparkplug](https://blog.opto22.com/optoblog/topic/sparkplug), [groov RIO](https://blog.opto22.com/optoblog/topic/groov-rio) [All posts](https://blog.opto22.com/optoblog/all) [Next](https://blog.opto22.com/optoblog/topic/firmware/page/2) ### Subscribe to Email Updates ### Recent Posts ### Posts by Topic - [groov EPIC (507)](https://blog.opto22.com/optoblog/topic/groov-epic) - [groov RIO (302)](https://blog.opto22.com/optoblog/topic/groov-rio) - [optonews (218)](https://blog.opto22.com/optoblog/topic/optonews) - [IIoT (214)](https://blog.opto22.com/optoblog/topic/iiot) - 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