Today I decided to make public a tool of mine that does the following:
INTERPOLATE FLASHES SORTING BLOCKS: Using this tool you can build an interleaved file, sorted by block sequence or partition, (it seems that the most useful mode is to sort by block sequence).
This way you can check the files inside the NANDs in a better way because the blocks order is the one that the console use when boot. Then if you sort 2 dumps it's easier to compare them because the files inside them follow the same order.
DEINTERPOLATE INTO NEW FLASHES: This tool can be used on a modified sorted dump, you can modify some bytes or even swap some whole files, the tool will rebuild the NANDS dumps flash0 and flash1 using the original flow order (only this way the dump work) and will compile a log file writing the page in which the ECC needs to be recalculated.
Note: This requires .NET Framework installed to run: microsoft.com/downloads/details.aspx?FamilyID=0856eacb-4362-4b0d-8edd-aab15c5e04f5&DisplayLang=en