It's probably one of the hobbyist files you got hold off. The Vag files are security signed which is all fine if the security is working. A workaround by the hobbyists was found to slip unsigned files into the units. Suspect you got hold of one of these. It then becomes home brew firmware which can mess the unit up. A signature bank should be visible on the file at the end. No signature bank, it's home brew. Metacheck sums are different. What these people do is to recompute the metacheck sum, they get slipped in behind a valid signed file, but the end of the file is missing a signature. They exploited a flaw in mib2 which vag closed off in mib3. No poi upload files, no freaking of the software for hobbyists. They closed that route off.
The visual check for the integrity of these files is to look for the bank of signatures at the of the metainfo2.txt file. If you see something like
[Signature]
signature1 = "9880af1b5d5456de15affd708b3b74b2"
signature2 = "3cf0dbe1d0baf902e43229a07cfb9281"
signature3 = "3c76dea04775d174ac4f937445ae538b"
signature4 = "84d056d12279144f13341a7ccec3a7a2"
signature5 = "39120b41cbf137351aa6a08c732b3521"
signature6 = "5a224666234d8700e6c46bf2a943452c"
signature7 = "b06daa662fc8d9a1aee981c0a5df7c1a"
signature8 = "4bcd566ead66604069d58ab0a9f77d14"
(What is in the quotes will be different)
You will see it at the end of the file if it's a legitimate Vag produced file. No signature bank then it's a home brew file with potential issues.
Mibsolution.one can include official files and home brew. A signature check tells you whether they are official or some hack put together which may or may not work.
It's impossible for hobbyists to sign the files, but it's used like a London underground technique of invalid ticket holders running behind someone with a valid ticket that opened the gate. To check whether it's valid, is it signed at the end ?. Note when looking at these files don't save them. Just close them.
Suspect East Yorkshire can sort you out.
