Hi,
Recently, an issue with downgrades from Chinese boards appeared.
It would seem that some scooters with a high DRV version, usually 2.x, can't be downgraded back to OFW.
If it happened to you, could you please write down what happened, what did you try, which model of scooter you have and which DRV version was on it? And more importantly, did you succeed in the end ?
Thanks to all of the people who can give information, it might help in finding a solution
Downgrade issues from high DRV version
Re: Downgrade issues from high DRV version
Hello
I got that issue too, the sollution is to disconnect the board from internal battery, connect it again and flash the cfw.
I got that issue too, the sollution is to disconnect the board from internal battery, connect it again and flash the cfw.
Re: Downgrade issues from high DRV version
Does not work in case of Error 7 (chunk error)
Re: Downgrade issues from high DRV version
Could you please explain more what you mean?Does not work in case of Error 7 (chunk error)
Re: Downgrade issues from high DRV version
Hi all
I have the same problem. I can't update the DRV after Esmax. Error 7 (chunk error)
I have the same problem. I can't update the DRV after Esmax. Error 7 (chunk error)
Re: Downgrade issues from high DRV version
connect another internal battery, this should workHi all
I have the same problem. I can't update the DRV after Esmax. Error 7 (chunk error)
Re: Downgrade issues from high DRV version
Hello,
If you get that famous error 7 because of ESMax, connect to your scooter using ES Rollback and select Main controller and 1.3.3
Click on next and generate the bin file
that "recovery.bin" can then be flashed to the main board using ST Link and will unbrick your scooter
If you get that famous error 7 because of ESMax, connect to your scooter using ES Rollback and select Main controller and 1.3.3
Click on next and generate the bin file
that "recovery.bin" can then be flashed to the main board using ST Link and will unbrick your scooter
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