> I updated my chd using chdman copy -i 1.chd -o 2.chd and it worked fine..... except > mame 145u1 now says my chd have bad SHA1. > > damn.... this is such a pain in the....!
There are issues that still need to be worked out and investigated by the Devs. If you look at mametesters plus various other threads and such, it has already been confirmed by the Devs themselves.
Hopefully, you have not deleted all your V4 stuff.