SM-G3812 brick

[.:Zogaib:.]

I'm with a G3812 in brick mode, the computer detects it as HELN drive. I'm trying to do repair by Jtag, but I can not get the program to recognize it and all the time I enjoy the message that the card is locked. Has anyone gotten any fix on this model?

[.:Zogaib:.]

LOG:
Welcome to Medusa Pro Software version 1.3.6.
Started.
Reader #0: Generic Usb Smart Card Reader 0

Please disconnect battery and USB cable.

Model Settings:
Interface : eMMC
Brand : Samsung
Model : SM-G3812
SRF : C:/Program Files/Medusa Pro Software/firmwareFolder/SAMSUNG_SM-G3812_EMMC_4YMD3R.srf
Voltage : 3.0V
Bus Mode : 1
Bus speed : Auto

Connecting...
Device : Sandisk eMMC SEM08G
Page size : 512 B
Block size : 512 B
Block count : 4294967295
Size : 2048.00 GB
---------------------------------------------------------------
CID Info

CID : 45010053454D3038479027788C7971D3
Manufacturer ID : 0X45
Device/BGA : BGA (Discrete embedded)
OEM/Application ID : 0X00
Product name : SEM08G
Product revision : 9.0
Product serial number : (hex) 27788C79
Manufacturing date : 07/2014
---------------------------------------------------------------
CSD Info

CSD : D00F00320F5903FFFFFFFFFF92404011
CSD structure :
SPEC version : 4.1, 4.2, 4.3, 4.4, 4.41, 4.5,
4.51, 5.0, 5.01, 5.1
Data read access time1: 10 ms
TRAN speed : 26 MHz
READ block length : 512 Bytes
WP group enable : YES
PERM_WRITE_PROTECT : NO
TMP_WRITE_PROTECT : NO
---------------------------------------------------------------
EXTCSD Info


Erase block size : 130560 Kbytes
Boot1 size : 32640 Kbytes
Boot2 size : 32640 Kbytes
RPMB size : 32640 Kbytes

Partition config : 11111111
Boot partition enable : User area
Boot ACK : Boot acknowledge sent during boot operation Bit

Boot bus conditions : 11111111
Boot bus width :
Reset boot bus conditions : Retain BOOT_BUS_WIDTH and BOOT_MODE values after boot operation
Boot mode :

Partitioning support : Device supports partitioning features
Enhanced attribute : Device can have enhanced technological features in partitions and user data area.
Max enhanced data size: 4261674496 Kbytes
Partitions attribute : 0xFF
Part setting completed: 0xFF
GP partition 1 size : 255.5 MB
GP partition 2 size : 255.5 MB
GP partition 3 size : 255.5 MB
GP partition 4 size : 255.5 MB
Enhanced area size : (0xFF80000) 255.5 MB
Enhanced area start : (0xFFFFFE00) 4096 MB

Backup EXT_CSD saved to file C:/Program Files/Medusa Pro Software/EXT_CSD Backups/SEM08G_03_05_2017_15_48_06.bin.
Connect successful.
---------------------------------------------------------------
SW: 1.3.6; FW: 1.16.
Repairing from file "C:/Program Files/Medusa Pro Software/firmwareFolder/SAMSUNG_SM-G3812_EMMC_4YMD3R.srf".
Write data verification is enabled.
Writing BOOT1 partition...
Write verification error 1. Possible reasons: damaged or write protected eMMC.
Disconnected.

[Medusa Box]

Hello.

As You can see on your Software log, You have not connected eMMC chip correctly or chip is damaged - it is not correct, that eMMC capacity (size) is 2048.00 GB, also Erase block, Boot1, Boot2, RPMB sizes and Partition config value are also incorrect:

Block count : 4294967295
Size : 2048.00 GB

Erase block size : 130560 Kbytes
Boot1 size : 32640 Kbytes
Boot2 size : 32640 Kbytes
RPMB size : 32640 Kbytes

Partition config : 11111111

Try to make each eMMC wire as short as possible (max. 3-5 CM length) and connect the device again. Try to select lower Bus speed value and connect the device. If the problem will still remain - most likely, eMMC chip has HW issue and should be replaced.

Only when device will be connected correctly, do Smart or Factory Repair.

http://forum.gsmhosting.com/vbb/f664.../#post12443348