Well yeah, don't really want to be responsible for a bunch of bricked consoles, ha ha
Also, though the 6.x MSET packs are good (content verified), rxTools does a hash check on the files before installing them, and the 6.x variants aren't acknowledged as legitimate for this reason. I'll see about adding them to the list of good downgrade packs in a bit. Script is good though, quadruple checked it.
Found the check code, just modifying it now. I'll see if I can push a new build out once it's done, tested, and actually working.
Edit: Alright, I don't get it. What type of hash is rxTools checking? It's definitely not CRC-32 anyway.
Examples:
4.x JPN
rxTools Hash: 96AEC379
CRC-32: d66440f8
MD4: b13e1aa8486bdf9876fc4dc35015f0e6
MD5: 54a5da4906e668a8cd171a8a93679f6f
SHA-1: f44a4b07d9c706374fb18fe2ce0a1061882fa306
4.x USA
rxTools Hash: 3387F2CD
CRC-32: e0bf8b35
MD4: 9053728c685acfca0cbb969c9a97936a
MD5: 2919666ccc53e29cc7a9e6214e10713a
SHA-1: b058f0db9e39d825a451a96dcc1d93495b8bd6e0
I'll keep trying to figure it out, but would love it if someone would throw me a bone, ha ha