ZR Nav VW RSA Verification Failed

[MMI]

Hello

I have a ZR Nav here. Its has the error in console when booting RSA Verification failed *STOP* . It does not boot

Anybody any idea what this problem might be ?

Regards

[congo]

Boot image is damaged or modified.
These units do RSA verification of the boot image and it will not boot if signature is not correct.
Regards.