Firmware for the BMS-C is updated to later versions only by BMW Dealer Diagnostics/Programming system, f650.com did link to Roberto's old info but there were errors in the info & that is not surprising as people back then were struggling to come to grips with some firmware issues & understand the BMS-C
There have been a few people who tried to update firmware by removing the EEPROM to reprogram it but that is not a smart way of doing it
I want to try this way, because i have all equipment and experience for that.
Also i want downgrade not upgrade.
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