DME/EDC

BTLD 48DB downgrade

13-03-2026 7 597 0

BTLD 48DB downgrade

If your DME is BTLD with version 36/37 and you want to downgrade, just use one of these "patched" BTLD files for downgrading!

"compressed btld" - these are compressed BTLD files in NRV format
"uncompressed btld" - these are uncompressed BTLD files, just for education

Copy the selected BTLD files to the ESys PSdZData /btld folder, then load the TAL file "only btld 36 to 35" and reflash.
After that, the BTLD will downgrade from 36/37 to 35. You can then change the type code and reflash with a different CS flash.
Remember that in some cases you need to disable FSC if you get an FSC error!

www.bmw-az.info

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