GSM-Forum - View Single Post - iPad Air 2 USB device not recognised after NAND change

edin2008 · 07-08-2020, 10:24

Hope someone can help me with this

First befor i remove Nand ipad works just it had icloud,after removal and change serial number and solder it back ipad usb not reconised by pc,i remove nand and conect to pc without it,same problem,i see on forum that pc must reconise it without nand to.Cpu and Ram was protected with temp. tape, 20cent coin and shield

-try 5 diferent usb cable

-2 diferent pc

-no heat on board
-cpu cold
-no short on caps
-no missing caps

I dont know what to do and i remove u2 on end just to try something and one pin is missing ,dont know is that pin cause the problem and where it go,dont have for this model a pcb layout.

here is a photo from U2 missing pin

and here how i protect CPU and RAM

https://ibb.co/HYQ2RJt

07-08-2020, 10:24	#1 (permalink)
edin2008 Insane Poster Join Date: Jan 2014 Posts: 77 Member: 2114773 Status: Offline Thanks Meter: 20	iPad Air 2 USB device not recognised after NAND change Hope someone can help me with this First befor i remove Nand ipad works just it had icloud,after removal and change serial number and solder it back ipad usb not reconised by pc,i remove nand and conect to pc without it,same problem,i see on forum that pc must reconise it without nand to.Cpu and Ram was protected with temp. tape, 20cent coin and shield -try 5 diferent usb cable -2 diferent pc -no heat on board -cpu cold -no short on caps -no missing caps I dont know what to do and i remove u2 on end just to try something and one pin is missing ,dont know is that pin cause the problem and where it go,dont have for this model a pcb layout. here is a photo from U2 missing pin and here how i protect CPU and RAM https://ibb.co/HYQ2RJt Last edited by edin2008; 07-08-2020 at 10:31.