# RELEASED - G1 Mini Custom Firmware **URL:** \ **Category:** Mining\ **Created:** [July 4, 2026, 11:44pm UTC](https://forum.grin.mw/t/released-g1-mini-custom-firmware/12646 "2026-07-04T23:44:08Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![SpaceBoss728](https://avatars.discourse-cdn.com/v4/letter/s/e274bd/32.png) [@SpaceBoss728](https://forum.grin.mw/u/SpaceBoss728)\ **Post date:** [July 4, 2026, 11:44pm UTC](https://forum.grin.mw/t/released-g1-mini-custom-firmware/12646/1 "2026-07-04T23:44:08Z")
Hello everyone! I’m finally happy with how the firmware and miner i have been working on is performing so I have decided to publish it for everyone to use. This firmware unlocks full overclocking and voltage control, allowing higher hashrates and increased productivity. Along with that is better metrics, stats and overall control. Easier fan control, overclocking profiles and improved UI are all features of this firmware. This will however be the first time it is tested on a device other then mine and there are indications in the stock firmware of other specific hardware being used so there may be some initial issues. If you run into one open an issue on GitHub and I’ll take a look into it. Any questions feel free to contact me and I hope you enjoy! > **[GitHub - holdengerr/iPollo-G1-Mini-Custom-Firmware: Custom Firmware for the iPollo G1 Mini Grin Miner](https://github.com/holdengerr/iPollo-G1-Mini-Custom-Firmware)** > > Custom Firmware for the iPollo G1 Mini Grin Miner ---
**Author:** ![hellogrin](https://avatars.discourse-cdn.com/v4/letter/h/a5b964/32.png) [@hellogrin](https://forum.grin.mw/u/hellogrin)\ **Post date:** [July 9, 2026, 8:39am UTC](https://forum.grin.mw/t/released-g1-mini-custom-firmware/12646/2 "2026-07-09T08:39:11Z")
I’m looking for sdcard to install, do you have the image of web version to patch firmware directly by the admin interface? ---
**Author:** ![SpaceBoss728](https://avatars.discourse-cdn.com/v4/letter/s/e274bd/32.png) [@SpaceBoss728](https://forum.grin.mw/u/SpaceBoss728)\ **Post date:** [July 9, 2026, 12:02pm UTC](https://forum.grin.mw/t/released-g1-mini-custom-firmware/12646/3 "2026-07-09T12:02:39Z")
Since my reworked version completely deletes that stock web UI mine has to be flashed from an SD card. ---
**Author:** ![hellogrin](https://avatars.discourse-cdn.com/v4/letter/h/a5b964/32.png) [@hellogrin](https://forum.grin.mw/u/hellogrin)\ **Post date:** [July 24, 2026, 4:10am UTC](https://forum.grin.mw/t/released-g1-mini-custom-firmware/12646/4 "2026-07-24T04:10:23Z")
I did tests on one of mine and not sure why it can’t hash, stop working after few mins, i had to switch back to ipollo firmware ![Screenshot 2026-07-21 201002 (1)](https://canada1.discourse-cdn.com/flex036/uploads/grin/original/2X/b/bccf5be2b04c6fddf8c7e6fc3cb84ac39c160dd5.png) ![Screenshot 2026-07-21 201142 (1)](https://canada1.discourse-cdn.com/flex036/uploads/grin/original/2X/d/d4229122fed7535bcc9bf874bc2db812154a7fbf.png) ![Screenshot 2026-07-21 201018 (1)](https://canada1.discourse-cdn.com/flex036/uploads/grin/original/2X/8/801268a459aa9c50dee0e5d1b3296ef8a168a732.png) ---
**Author:** ![SpaceBoss728](https://avatars.discourse-cdn.com/v4/letter/s/e274bd/32.png) [@SpaceBoss728](https://forum.grin.mw/u/SpaceBoss728)\ **Post date:** [July 24, 2026, 4:03pm UTC](https://forum.grin.mw/t/released-g1-mini-custom-firmware/12646/5 "2026-07-24T16:03:41Z")
> [@hellogrin](#): > > I did tests on one of mine and not sure why it can’t hash, stop working after few mins, i had to switch back to ipollo firmware I know you just switched back to stock but if you could run the custom firmware again and download the support bundle once the error shows that will clearly tell me what the issue is and i can most likely patch it. It doesnt contain any identifiable info just error logs. If that works for you emailing it to me at [holdengerr@gmail.com](mailto:holdengerr@gmail.com) would be great. Thanks ---
**Author:** ![SpaceBoss728](https://avatars.discourse-cdn.com/v4/letter/s/e274bd/32.png) [@SpaceBoss728](https://forum.grin.mw/u/SpaceBoss728)\ **Post date:** [August 18, 2026, 3:23am UTC](https://forum.grin.mw/t/released-g1-mini-custom-firmware/12646/6 "2026-08-18T03:23:31Z")
Just fixed a major compatibility issue with some devices. v1.2.1 is live on github and should solve issues with board revision variance etc. > **[Release G1 Mini Custom Firmware v1.2.1 ·...](https://github.com/holdengerr/iPollo-G1-Mini-Custom-Firmware/releases/tag/v1.2.1)** > > G1 Mini Custom Firmware 1.2.1 > Highlights > > Fixed the dashboard trend graph so startup and restart gaps are not rendered as repeated drops to zero. > Added a standalone MCU loader that probes supported...