It was at this moment he knew, he f'd up.
Looks like you're right.
And I think I'm not ready yet to fulfil all those additional activities.
The first thing that comes to mind to recover the dead ap is to dump the nand from the another stock ap, somehow change the serial and mac (becoming delirious) and write it to the semi-dead ap, but because of all the cloud-activate things I'm pretty sure that won't work.
Maybe someone got any ideas?)
UPD: I just compared the chips on H90X with MR90X, it's got absolutely the same hw, except for the nand, it's a ESMT F50L1G41LB (should've done it earlier)
UPD2: I've posted a few PCB photos here: