The system that the Electisan F350 e-scooter is built on a basic STM32 platform. The motor controller is based on a the venerable STM32F103C and the display controller is a STM8. Sadly the manufacture in china locked up the firmware. The GPS tracker is based on the nRF52840 and was not locked. So the firmware is included below. The tracker is manufatured by Comodule and the FCC was so kind to include some great photos.
Once the potting is removed there is pads exposed for the SWD nRF52 (six pins) and the SPI flash chip. (four tiny pins) ISSI IS25WP064A Pinout to be included later. On the GPS tracker there is a SARA-R412M cellular modem. That I have been told is a real pain to use.
01E ~ High current protect
02E ~ Low voltage protect (battery or cHigh current protect)
03E ~ High voltage protect (controller problem)
04E ~ Locked motor protect
05E ~ Controller problem (MOS burned)
06E ~ Controller problem
07E ~ Motor problem
08E ~ Motor OT
09E ~ Throttle problem
10E ~ Brake problem (Usually broken brake lever)
11E ~ Signal transmission problem (controller problem)
12E ~ Signal transmission problem (controller problem)
13E ~ Cannot communicate with BMS
15E ~ Unknown