Please note that it is recommended to nuke the flash on first installation.
PicoCalc
The standard PicoMite, PicoMiteRP2350, WebMite and WebMiteRP2350 versions should all support the PicoCalc. To use this nuke the current firmware on your PicoCalc and install the relevant version from the download. The code will automatically detect it is running on a PicoCalc and configure itself. You must be running a version of the bios that supports returning the battery level. I’ve been loaned a PicoCalc and tested with BIOS 1.5 and 1.6.
For information: BIOS 1.5 was a limited in between version and has been retired. The BIOS 1.6 should be on the Clockworks github but I was unable to find it. In the meanwhile it can be downloaded from here. Please note this is http and not https.