How to change RST_n_Function 0x01 to 0x00

[4G-TELECOM]

Samsung J100H Boot repair ok but no download
I think problem with RST_n_function
Ok working emmc RST_n_ 0x00 but this emmc show 0x01
How to change this

[Legija]

Edit it to 0000 0000

[Black-micron]

0 - RSTn Disabled

1 - RSTn Enabled

how to change the value ?

1 - select register [162]



2 - change 0 on 1



3 - press the button "Write Selected EXTCSD Field"



result:

[4G-TELECOM]

Yes Change done but when check again show old value

Open serial port...OK
Connecting to the RIFF Box...OK
Firmware Version: 1.49 (RIFFBOX1), JTAG Manager Version: 1.77

Connecting to the SD/eMMC Card...OK
Set I/O Voltage reads as 1.80V, SD_CLK Frequency is 4 MHz

Memory Type .......................... eMMC
Manufacturer ID ...................... 0x90
OEM/Application ID ................... 0x4A
Product Name ......................... "H4G2b "
Package .............................. BGA
User Area Partition Size ............. 0x0000E9000000 Bytes (3.64 GB)
Boot Partition Size .................. 0x000000400000 Bytes (4.00 MB)
RPMB Partition Size .................. 0x000000400000 Bytes (4.00 MB)
OCR Register ......................... 0xC0FF8080 (Dual Voltage, High Capacity)
Write Protection Bits ................ NONE
ExtCSD Register Fields ............... [177] = 0x00, [179] = 0x08, [162] = 0x01
Boot Configuration ................... Boot from Boot Partition 1 (Bus Width = 1Bit)
Chip Revision ........................ 0.1
Multimedia Card Revision ............. 1.6 (eMMC v4.5, v4.51)
Serial Number ........................ 0x38DAC107
Memory Manufacturing Date ............ 2014

Write value

Open serial port...OK
Connecting to the RIFF Box...OK
Firmware Version: 1.49 (RIFFBOX1), JTAG Manager Version: 1.77

Connecting to the SD/eMMC Card...OK
Set I/O Voltage reads as 1.80V, SD_CLK Frequency is 4 MHz

Detected eMMC Chip, ID: 0x90/0x4A (H4G2b ), User Area Partition = 0x0000E9000000 Bytes (3.64 GB)

Writting EXTCSD Field: [162] RST_n_FUNCTION, Size: 1 byte...OK

Check again

Open serial port...OK
Connecting to the RIFF Box...OK
Firmware Version: 1.49 (RIFFBOX1), JTAG Manager Version: 1.77

Connecting to the SD/eMMC Card...OK
Set I/O Voltage reads as 1.80V, SD_CLK Frequency is 4 MHz

Memory Type .......................... eMMC
Manufacturer ID ...................... 0x90
OEM/Application ID ................... 0x4A
Product Name ......................... "H4G2b "
Package .............................. BGA
User Area Partition Size ............. 0x0000E9000000 Bytes (3.64 GB)
Boot Partition Size .................. 0x000000400000 Bytes (4.00 MB)
RPMB Partition Size .................. 0x000000400000 Bytes (4.00 MB)
OCR Register ......................... 0xC0FF8080 (Dual Voltage, High Capacity)
Write Protection Bits ................ NONE
ExtCSD Register Fields ............... [177] = 0x00, [179] = 0x08, [162] = 0x01
Boot Configuration ................... Boot from Boot Partition 1 (Bus Width = 1Bit)
Chip Revision ........................ 0.1
Multimedia Card Revision ............. 1.6 (eMMC v4.5, v4.51)
Serial Number ........................ 0x38DAC107
Memory Manufacturing Date ............ 2014

[Black-micron]

Yes Change done but when check again show old value



Write value

Check again

Sorry i am not see problem?

RSTn - Enabled.

Maybe you want change Boot Config [177] [179] ???

[4G-TELECOM]

Sorry i am not see problem?

RSTn - Enabled.

Maybe you want change Boot Config [177] [179] ???

Yes
i thank this config work one time change

[Black-micron]

press the button "Set Boot Operation Mode"



And manual edit Boot Config



Or from auto depending the CPU

[4G-TELECOM]

Thanks
Help me
Mr. Legija @ Black-Micron
But No Luck

[Black-micron]

I don't understand what you want to change?

[4G-TELECOM]

I don't understand what you want to change?

Dear
Sir
Im not know coding but i know if change this value handset Alive again
i check many handset RST_n value 0x00 boot config enable ,0x01 value boot disable
All two value handset boot repair ok but,set power on value 0x00 i check it many handsets
If config disable (0x01) then not possible to enable

So without knowledge don`t touch RST_n Function

[nicolayer]

it seems 4G-Telecom say : even if we will do samsung factory format, even if we will do update firmware of emmc - state of [162] will still as before - bcs One Time Programming, and can be changed only in new factory emmc

Resume, set [162] from 0x00 to 0x01 is easy, and set from 0x01 to 0x00 is never.

BR