BMW MS45 SERIOUS CHECKSUM ERROR

[autohaus]

Hi guys, can i please get help to correct checksum on flash, no obd communications, so i cant even update software.

attached are all my ktag reads
Kind Regards
A.H

[TSC2010]

you use ktag original

[autohaus]

i have done many other ms45 with my current ktag, with out issues... if i write another flash dump, my ecu responds, but if i write ISN to EWS, i get " irreversible anti tampering" fault

[Lambda1]

your flash is corrupted... not chks error.
Post good flashfile from good backup ... not yours.
Also post good ews read and I will write ISN inside...
So you can sync with inpa.

[autohaus]

Do you perhaps have a set, DME AND EWS match that i can use? preferably 3.0i
will pay if its with popcorn limiter at 3.700rpms :star:

[Lambda1]

popcorn @3700 ... bullshit. Engine can rev much more mate...
No havent got pair for all. + you need Z4 3.0i ... 530i... isnt same... different coding... wouldnt work good.