how to solve iphone 64bit flash with itunes error 40

[maxieboy]

Originally Posted by reparatieplus

The phone worked fine before, when i did u2 ic replacment then the error 40 showed up.

then you trying to say is the error 40 comes from u2 ? is that what you mean ? i did many time to do this task deal with error 40 but i did found the problem from U2 may be it is a rear case for you

[TBC01]

I am seeing error 40 on ipad air consistently with this IP box

Removed nand, extract data write serial etc. fit to device.. log says nand failed to initialise.
hmm remove nand and breakout lga socket to do testing on problem.
all pads pristine and good continuity to socket, still same.
Nand is reading and writing in ipbox v2, I watch current through flashing cycle and it peaks at nand initialise.
3 nands all do same, board is not faulty 2 good boards doing exact same thing.

A few bad blocks maybe according to ipbox, Nand cannot set state in pages so blocks must be set ff bit high then change state to bit low to create data. My confusion with answer above is why IP box can access nand but ipad can't?

can someone provide the logic to erasing nand, flash in device then put in programmer to add serial number!

This stinks of ipbox can't create genuine data to disk, also it stink of some kind of checksum security not being updated on disk contents. So suggesting I buy new nand let ipad partion and build disc then add sn etc seems to me will not solve my problem!

However I order brand new nand and see if flashes, if it does I will dump full chip and write it full dump to supposed not working chip. I will see if suddenly I can no longer remove nand chips properly or if ipbox team are expecting me to correct software errors by replacing all devices with new nands and fitting twice!

Lets face it a simple check on all data sn etc would make big problem if data is not added correctly by ip box software. Lots of no replies by vendors is of concern as is reasoning at top of thread for erasing then flashing then adding sn! You say o/s 10.2 is different why is it different when talking about nand, is security feature yes or no?

[tester2011]

..do you know why sometimes there are 3 caps (C0634, C0616, C0633) near nand and sometimes only two. The caps listet above are from iphone 6 schematics.

i have now a pcb from a iphone 6 plus, 16gb and this one also only have C0633 and C0616! C0627 is missing but no one worked on the pcb before

[aries20]

Originally Posted by maxieboy

my friend i have a book of nand ic here i already tried nand ic and there is no changes, now i have iphone 6 plus error 9

after back up and format to ipbox2 becomes error 40 im pretty sure that this is not a nand ic issue, the phone is working and i check any posible problem for error 40 but all is okay. i have 10 iphone 6 plus the same problem error 9 after do some format on ipbox 2 it will become error 40


im planing to buy WL tools

Hi dear, you have been able to solve the error 40 in your equipment ?, if so, it was with this same box iP box 2, or was with some other box for example the Naviplus pro 3000

[aries20]

Hello dear, in all this time, you have been able to solve the error 40 in your equipment ?, if so, it was with this same box iP box 2, or was with some other box for example the Naviplus pro 3000. I am doubting about that Box buy now for nand flash.

[aries20]

Hello dear, you have been able to solve the error 40 in your equipment ?, if so, it was with this same box iP box 2, or was with some other box for example the Naviplus pro 3000

[TBC01]

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

[aries20]

Entiendo que el error 40 puede deberse a otros factores mencionados. Pero al final resolviste el error 40 ios 10.3 en 2 pasos con la caja iP caja y 3utools? (Te pregunto por qué el traductor no es muy bueno: D).

Enviado desde mi HTC One_M8 mediante Tapatalk

[aries20]

Originally Posted by TBC01

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

I understand that error 40 may be due to other factors as mentioned. But in the end you solved the error 40 ios 10.3 in 2 steps with the box iP box and 3utools? (I ask you why the translator is not very good: D).

Enviado desde mi HTC One_M8 mediante Tapatalk

[TBC01]

yes the above appears to have solved problem for me, I also reflashed the board to make sure serial etc is not erased again. Seems to work fine.

[cisco2017]

If you don't want to get error (40) because of boot 2, when you do a write select a boot 2 file for your device in 'system\write_boot_64bit'

DO NOT use test strips (ribbon), they add a 1.5 resistance and that might be why the error 40.
I have tested this 100%
Use a very low temp solder paste to reball so is easy to remove, if everything works out fine then re-ball with high temp solder paste.

[aries20]

Originally Posted by TBC01

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

I wonder if Naviplus pro3000s users will have to do this whole process. Or it will be much easier for them ?.

[vazgsm]

Originally Posted by aries20

I wonder if Naviplus pro3000s users will have to do this whole process. Or it will be much easier for them ?.

have to do the whole process as well. but it seems to be more efective, i could actually unbricked 2 i6 boards with it, and they didn´t have success with ip-box 2. but others (maybe 5 or 6) that didn´t solve with ip-box2 also no solution with pro3000s.

bought ip-box2 mainly to repair error 40, and couldn´t solve any case. bought naviplus, got little better, but still, most phones tried are still dead. either of them should NOT advertise error 40 repair, because leads ppl to error, like myself. spent more than 1000usd (products, shipping, taxes), and still haven´t got back what I paid. if it was today, wouldn´t buy any of the 2.

both tools are good for upgrading NAND size, and that kind of service only few ppl pay, as it´s not cheap. most end up buying new phone with bigger NAND size..

[aries20]

Originally Posted by vazgsm

have to do the whole process as well. but it seems to be more efective, i could actually unbricked 2 i6 boards with it, and they didn´t have success with ip-box 2. but others (maybe 5 or 6) that didn´t solve with ip-box2 also no solution with pro3000s.

bought ip-box2 mainly to repair error 40, and couldn´t solve any case. bought naviplus, got little better, but still, most phones tried are still dead. either of them should NOT advertise error 40 repair, because leads ppl to error, like myself. spent more than 1000usd (products, shipping, taxes), and still haven´t got back what I paid. if it was today, wouldn´t buy any of the 2.

both tools are good for upgrading NAND size, and that kind of service only few ppl pay, as it´s not cheap. most end up buying new phone with bigger NAND size..

Have you tried solving with this?:

http://forum.gsmhosting.com/vbb/f937...4bits-2211668/

Enviado desde mi HTC One_M8 mediante Tapatalk

[vazgsm]

Originally Posted by aries20

Have you tried solving with this?:

http://forum.gsmhosting.com/vbb/f937...4bits-2211668/

Enviado desde mi HTC One_M8 mediante Tapatalk

tried mentioned ways (as mafioso3, but reading/saving data before) and as filemon214 (exactly same way). also tried a lot of variations I saw, changing/rewriting sn before and after activation error.

now I´m lazy, spent too much time on few phones, and that´s not good in my shop, don´t trust my employess to remove/resolder/reball NAND, so have to do myself. I keep reading threads to see anything new, as for now I don´t take error 40 iphones anymore. Too much hassle for little money...