iPad Pro 12.9 broken WiFi chip question. - GSM-Forum

Jacksoft · 02-13-2021, 18:28

Hi all,
I have an iPad Pro 12.9 4G (A1652) with broken WiFi (coded as 339S00044).

I've unlocked tha NAND and mounted a new chip, but coded as 339S00047 used in iPad Pro 12.9 WIFI since it's the same mainbord with the difference of without the 4G stuff and because 339S00044 was hard to find around.
Bluetooth is recognized and works, WiFi not (no MAC address, no toggle switch is working).
Some shops sells both the 44 and 47 version (by saying for 4G and for WIFI rispectively), someother also the 45 and I don't understand which are the differences.

Is possible that the WiFi doesn't work because this? If yes, why?
If not could someone have some suggestions or a schematic to try fix this problem.
Thank you all.

sutek89 · 02-25-2021, 16:06

Wifi and 4G models have different WiFi Chips. When you say you unlocked the NAND do you mean you unbound the Wifi? Or changed SN for iCloud?

Jacksoft · 02-25-2021, 20:21

Yes, I've unbounded the WiFi, nothing else.
Why the chips should be different?

debeliamark · 02-27-2021, 07:29

Quote:

Originally Posted by Jacksoft

Yes, I've unbounded the WiFi, nothing else.
Why the chips should be different?

Because of Apple ... they hold under control all - in our case - just prevented [in past] to "unlock" FMI=ON by change of board type [4G -> WiFi] . You know, use of different combo BT+WiFi modules for models with SIM and models with WiFi only exist from iPad Air 2 still and continue - so you need to get exactly same combo module as original one.

02-13-2021, 18:28	#1 (permalink)
Jacksoft Junior Member Join Date: Apr 2009 Posts: 3 Member: 1003091 Status: Offline Thanks Meter: 0	iPad Pro 12.9 broken WiFi chip question. Hi all, I have an iPad Pro 12.9 4G (A1652) with broken WiFi (coded as 339S00044). I've unlocked tha NAND and mounted a new chip, but coded as 339S00047 used in iPad Pro 12.9 WIFI since it's the same mainbord with the difference of without the 4G stuff and because 339S00044 was hard to find around. Bluetooth is recognized and works, WiFi not (no MAC address, no toggle switch is working). Some shops sells both the 44 and 47 version (by saying for 4G and for WIFI rispectively), someother also the 45 and I don't understand which are the differences. Is possible that the WiFi doesn't work because this? If yes, why? If not could someone have some suggestions or a schematic to try fix this problem. Thank you all.

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02-25-2021, 16:06	#2 (permalink)
sutek89 Junior Member Join Date: Aug 2016 Posts: 12 Member: 2613325 Status: Offline Thanks Meter: 3	Wifi and 4G models have different WiFi Chips. When you say you unlocked the NAND do you mean you unbound the Wifi? Or changed SN for iCloud?

02-25-2021, 20:21	#3 (permalink)
Jacksoft Junior Member Join Date: Apr 2009 Posts: 3 Member: 1003091 Status: Offline Thanks Meter: 0	Yes, I've unbounded the WiFi, nothing else. Why the chips should be different?