This is the beginning of a Disassembly of an probably V1.x ECU module from an NIU N1S e-scooter.

It basdically consists of am STM32F103 (ARM Cortex M3) controller, a UBLOX MAX-7Q GPS module and a M590E GSM module from Neoway. I'm currently start commenting the STM32 code, identifying basic functions like strcpy or atoi.

Additionally, you'll find the dump of the 512k SPI flash ROM. I guess that's being used for saving a new firmware before flashing it into the STM32's internal flash. I conclude this as I found (probably) the same ARM code in there as in my disassembly. I wrote 'Probably' because I did no yet made a diff between those two - if it's an updated firmware, it should differ though.