# Rugged-SOM lose i2c connections to Switchblox after periods of time **URL:** \ **Category:** BotBlox Hardware\ **Created:** [July 15, 2026, 12:14am UTC](https://forum.botblox.org/t/rugged-som-lose-i2c-connections-to-switchblox-after-periods-of-time/615 "2026-07-15T00:14:20Z")\ **Posts on this page:** 1\ **Showing post:** 2
**Author:** ![josh\_elijah](https://yyz1.discourse-cdn.com/flex027/user_avatar/forum.botblox.org/josh_elijah/32/568_2.png) [@josh\_elijah](https://forum.botblox.org/u/josh_elijah)\ **Post date:** [July 15, 2026, 2:15am UTC](https://forum.botblox.org/t/rugged-som-lose-i2c-connections-to-switchblox-after-periods-of-time/615/2 "2026-07-15T02:15:55Z")
Hi there, If you’re using a SwitchBlox Rugged that was shipped before May 2026, it will be running a firmware that sometimes interacts with the software running on Rugged SOM, via the shared I2C bus between the two boards. To fix this, the SwitchBlox Rugged needs to be flashed with the latest version of the firmware. Instructions on how to flash our boards can be found at the link below. > [@How do I flash BotBlox boards with firmware?](https://forum.botblox.org/t/how-do-i-flash-botblox-boards-with-firmware/244): > > Flashing Boards with ST-Link V2 Hardware requirements A compatible BotBlox board (not all our boards can accept firmware) [ST-Link V2](https://www.adafruit.com/product/2548)[Segger 6 pin pogo pin cable](https://www.tag-connect.com/product/tc2030-idc-nl)[Segger pin retaining rubber (optional)](https://www.tag-connect.com/product/grip-6-3-pack) Female to male jumper (dupont) cables A PC with STM32 [ST-Link Utility](https://www.st.com/en/development-tools/stsw-link004.html) installed Steps Connect the ST Link V2 to the pogo pin 6 pin header. The photo below shows the pins to connect to on the pogo pin header. The corresponding pins on the ST-Link V2 are labelled on the device. Use any jumper cabl… Meanwhile, we will email you with the latest firmware to flash. --- _[View the full topic](https://forum.botblox.org/t/rugged-som-lose-i2c-connections-to-switchblox-after-periods-of-time/615)._