So I decoded it using a small nodejs script, and what I found is a key where 15 of the bytes are FF.
Something like :
80 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff etc... <15 real bytes, kept secret, presumably valid> <checksum>
So my guess here would be that somehow the flash on the iphone got corrupted, and half the key is missing.
A corrupted storage won't have a correct key string like this. You got the first byte correctly (0x80) which means there is no corruption here. Additionally if your checksum was valid, that could be another reason why it is not corrupted.Something like :
80 ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff etc... <15 real bytes, kept secret, presumably valid> <checksum>
So my guess here would be that somehow the flash on the iphone got corrupted, and half the key is missing.
P.S. It's odd that you have so many of these "friends" who come into possession of weird looking stuff which you then try to "crack" for them...
