Downgrading firmware


  • Is it possible to downgrade firmware in the REC Active BMS?  That is, can I (re)load an older version of firmware over top of a later version if I'm unhappy with the later version?



  • Yes you can.

    But what is the problem ?

    Since 2.9 and the user programmable of CVLC , it is much better to make a nice "float" setting. (Stop charging)


  • No specific problem ... yet. I'm considering updating an existing 2-contactor system from 2.6 , and with all the recent changes to the way a 2-contactor system is handled, I want to be sure I can revert back to a functioning system if the new fw "breaks" something I'm using. 


  • Yes, I have downgraded several times while testing with the PC software and RS485 cable, but havent tried it yet with the WiFi module.


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