Lumia 1520 dead - (eMMC PINOUT INSIDE)

[toninhosantos]

Scan I can do now, but I can not read the connection seems unstable, what to

[toninhosantos]

Reading now

[toninhosantos]

MR X 1GB shadow here is the dump file Lumia 1520 dead

Lumia 1520 RM-937 Product code 059V253




OK, got it.. Will give you repair file for it.

[Advance-Box]

@toninhosantos

Try this first:

LUMIA_1520_RM-937_QUICK_FIX.mmc


This is just a quick repartition of eMMC. As I saw in your eMMC Dump, all your partitions are still OK. So just do QUICK FIX and it should be able to make your phone into a Bootable state.


Also check battery. If phone is dead for a long time, battery will be discharged.

Use multi-tester, if battery is less than 3.80v then it is totally discharged. Connect 5V from USB cable to + and - of battery for few minutes, until it becomes more than 3.80v.

A dead lumia phone cannot charge it's battery...

Post pictures of your eMMC Wiring/Soldering so I can sticky this thread


B.R.

[toninhosantos]

MR X shadow worked not see the image.

[toninhosantos]

still dead. what to do?

[toninhosantos]

if you need, i have the backup BOOT1, BOOT2 and RPMB

[Advance-Box]

Hi,

I will prepare full boot repair for you.
I will upload within 24-hours

[Andreisaint]

hello! I have the same problem lumia 1520 no boot
atf does not see emmc via emmc TP
need to change emmc?

[toninhosantos]

I loaded the battery, but does not recognize any driver and the device still dead when I disconnect the battery there only recognizes the driver Qualquom hs usb Qloader 412

[Advance-Box]

@toninhosantos

I rechecked your dump again... and I am 100% sure all your BOOT partitions are OK.

But anyway, download BIG BOOT FILE for 1520 RM-937 here:
LUMIA_1520_RM-937_BIG_BOOT.mmc

This will take some time to write to your eMMC... Since total size to write is 182 MB.


Check post #19 about battery... If it is less than 3.80v, then you need to charge it with an external charger or a USB cable as described in post #19.

When wires are connected to eMMC Test Points, phone will NOT detect eMMC Properly. This is maybe the reason why your phone is still not detected properly in device manager. So just desolder the wires and check if it is detected OK.

B.R.

[toninhosantos]

As for the battery, I soldered one usb connector on the battery cable for two hours, and tested its voltage is 3.8 v. As for desoldering the wires really are still soldiers, because it was very difficult to find communication but I will desolder and test if it does not work I'll write this full boot. Thank you for your attention.

[toninhosantos]

I will just unsolder the wires and VCC VCCQ because of regulators, because the other wires do not see the need for soldering will be free, since the RJ45 connector is disconnected from the box. Or am I wrong?

[Advance-Box]

@toninhosantos

If you get problem with communication, try to switch CLK (YELLOW/RED)connection to other side of resistor like this:

Some end user from china reported this gave him a more stable connection, and he was able to repair phone already.


Anyway, all other BIG BOOT FILES already uploaded here:
http://forum.gsmhosting.com/vbb/10399850-post2.html

B.R.

[toninhosantos]

I have no problems with communication, may have expressed myself badly, is not dessoldei wires because it is very troublesome to weld, I did not want to unsolder the wires and having to weld again, communication is excellent.