Tonite, after months of works and research i successfully achieved one big result, i was able to unscramble my nand dump using my latest version of flow rebuilder! (for those who don't know, the dumps are divided in blocks, a 1024 fraction of the dump, those 1024 blocks are all srambled so until now we couldn't manage the contained files, neither study the dump itself cause of the fact all wasn't in the right place).
All file offsets and sizes now perfectly match, and we can extract the files inside the dump in order to swap/study or whater we'd like to try
I'm really satisfied about my work, it was a pain but i won at least
I'll release the app in some days after some serious debug.
See you all
P.S. I'll greet all my friends who contribuited to the work when i'll release the tool