Well anyways, to those still trying to fake the firmware, I'll just give you some advice based on what I believe (so i'm not too sure about this though), since it seems like I'm not getting anywhere anymore (lol)
This is for HxD Hex Editor: (dunno about other hex editing programs)
1. On the 3.41 firmware file, click anywhere at the top of the file and press Ctrl + F
2. Where it says Datatype, switch it to Hex-values and put
03 00 41 in the search bar and search it.
It should look a little something like this:
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Edit it to whatever you want your version to be
Search forward for another 2 times I believe
Do NOT edit anything that looks like this:
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I am not 100% on this, but based on my understanding, those are also version files the ps3 reads (But I still got the error)
I just put this up incase someone is trying to do the same
I checked the same thing on the other 2 firmwares and got the same results (03 00 42 in a 3.42 file and 3.50 etc.)