Wow... I just unintentionally tested the A9LH nand restore feature.I had no idea that it would search for a "NAND.bin" file on your sdcard and restore it, I thought it was strange when it said "restore nand backup..." I looked through the source and apparently that's been a feature since the initial commit I'm so glad everything went fine and A9LH installed successfully after that but wow... this should have been documented somewhere (unless I'm just shit at searching for things) :/This only happened because I forgot to delete my sysnand backup from my sdcard after restoring from 2.xSo, it could possibly be fine to install A9LH from 2.x because it would install your sysnand backup before exploiting (not willing to confirm that sorry but I can confirm restoring a nand backup of an identical nand worked fine for me)