I did some testing with my error 40 problem ios 10.3 .
I built a testpad, added a lga socket etc..
firstly chinese preprogrammed chips "produced error40"
I fully erased a 64gb nand, i then added serial etc ...
Device flashed, no activation (serial etc all missing when extract nand)
used fix serial etc to rewrite data
Insert chip to socket boots and activates using 3utools straight away..
This seems a bit long winded tbh, I dont see why data missing after update?
Do we really have to do job twice now? At least a little evidence ipbox actually works lol.
There is mention of board problem if error40 before any write (seems to be rubbish) as error40 i was getting was can't find nand! immediate
I think problem with error 40 in general is nand problem - this is very generic as can be soldering, programming, board problem, could potentially be even tristar, cable, socket etc etc. So why the error is common is obvious i suppose hence why no global solution..
the next step for me is full dump of nand, then full write to another. I expect if i take a full dump before adding serial via fix feature I wont have to do any update.
In the back of my mind there is the way nand chips write data. They can't turn single bits on they have to turn blocks or 128k on the switch of individual bits as bytes for data. makes me think the serial etc is backed up then put back afterwards, but maybe ipbox doesnt write this extra data?
I will keep testing until i find the answer
