Help Please, Downgraded 08 5series now car won't start...

[Neh]

hi everyone, i went to do a second key for that bmw.. so i downgraded cas and added another key
now the car cranks but dont start..
i took the cas home and read it with vvdi prog.. can anyone fix it for me please ?

please help

[Asifmehmmod1]

Dear,
Your files flash and eeprom both are ok.
Diag car ..may be bad soldering..check scrrenshot..
528003

[Neh]

Hi, after i added the key, i clicked synch cas with DME and then it stopped working
someone told me that i messed up the "ISN" .. there's anyway to fix that?

[P&D]

Have a read here may help.........http://www.digital-kaos.co.uk/forums/showthread.php/439578-Downgrade-CAS-using-winkfp-AVDI-FVDI