Cant boot into fastboot or flashmode, device not recognized

senator m95

Senior Member
Nov 6, 2014
101
7
0
Shiraz
Hi,
My M4 won't recognized in MTP mode.nothing happens when i connect the cable,just charging mode(Not asking to choose between charging mode and MTP)
today I wanted to flash a new firmware (E2333,UB,usb debugging on). But I cant come to Fastboot/Flashmode . In Windows a message comes, which says that the device get not fully detected. On the device manager I get "device not recognized" and the hardware id is USB\CONFIG_DESCRIPTOR_FAILURE or USB\DEVICE_DESCRIPTOR_FAILURE. I also followed the guide the, but without luck: http://troubleshooter.xyz/wiki/fix-u...equest-failed/. And drivers are for sure installed (also installed at least Xperia Companion)
I'm sure of drivers bcuz other phones do ok with drivers and get into flash mode without problem.
also tried different cables and computers.
Even replaced whole micro usb socket with a new one but nothing changed!
I did:
... power off -> hold volume down + plug usb -> "device not recognized" and red led and sony logo then gets into charging screen
... power off -> hold volume up + plug usb -> device not recognized" and red led and sony logo then gets into charging screen
... power off -> hold volume up (and also a try with vol up+down) + power till the 3 times vibration comes. but after that it also not boot into flashboot/fastboot.
... wiped the data/internal partitions from recovery -> same like before

Finally wiped system partition and installed PexoRom system.img from TWRP's Terminal,after boot nothing changed!!!:crying:

Any idea what is wrong with my M4 ?
 

fifikas1

Member
Mar 13, 2015
6
0
0
It's very often when one of two ram is not working.
I mean it's a hardware problem. Are you able to check in settings how much ram shows ?
If something like 883mb,if Im right then you have to buy new motherboard.