Tom Verbeure writes on his blog about fixing a bug with certain GPS receivers from Symmetricom that can no longer roll over after September 18th, 2022, as their firmware does not support this.
Rather than upgrading firmware, which can be difficult as the product is no longer supported, Verbeure chose to use an RP2040 board that sends extra commands to the GPS chipset during boot-up, thus updating the module.
All the code is open-source, and Verbeure highlights that this approach also works for future bugs and can be used more widely for other electronic components with similar chipset communications issues.
It also serves as a reminder that interposers can be a good workaround for firmware bugs.
