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Go Back   GSM-Forum > Product Support Sections > Hard/Software Products (official support) > Easy-Jtag / Easy-Jtag Plus

Easy-Jtag / Easy-Jtag Plus The official support section. You can ask here your question and get answer regarding using Easy-Jtag / Easy-Jtag Plus.

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Old 04-29-2021, 07:57   #1 (permalink)
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How to remove write protection in SANDISK eMMC


Is it possible to remove write protection in SANDISK chips?
Here is the log



EMMC Device Information :
EMMC CID: 45010044463430363401BCA742A0C212
EMMC CSD: D00F00328F5903FFFFFFFFEF8A404022
EMMC Manufacture : SANDISK , EMMC NAME: DF4064 , HEX: 444634303634 , S/N: BCA742A0 , rev. 0x01
EMMC Manufacture ID: 0x45 , OEM ID: 0x00 , Device Type: BGA (Discrete embedded) , Date: 12/2015
EMMC ROM 1 (Main User Data) Capacity: 59640 MB (000E8F800000)
EMMC ROM 2/3 (Boot Partition 1/2) Capacity: 4096 KB (000000400000)
EMMC RPMB (Replay Protected Memory Block) Capacity: 4096 KB (000000400000) Counter: 5260 , Response: Not Clean
EMMC Permanent Write Protection: No
EMMC Temporary Write Protection: No
EMMC Password Locked: Yes
Extended CSD Information :
Extended CSD rev: 1.8 (MMC 5.1)
Boot configuration [PARTITION_CONFIG]: 0x08 , Boot from: ROM2 (Boot partition 1)
Boot Bus Config: 0x02 , width 8bit
H/W Reset Function [RST_N_FUNCTION]: 0x01, RST_n signal is permanently enabled
Supported partition features [PARTITIONING_SUPPORT]: 0x07
Device supports partitioning features
Device can have enhanced technological features in partitions and user data area
Device can have extended partitions attribute
Partition Settings [PARTITION_SETTING_COMPLETED]: 0x00
Backup saved: DF4064_BCA742A0_20210429_084852.extcsd
EMMC Init completed.

Error: EMMC Password Locked



Thanks for help
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Old 04-29-2021, 12:43   #2 (permalink)
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Quote:
Originally Posted by Jane1 View Post
Is it possible to remove write protection in SANDISK chips?

Thanks for help
try to press "Erase e(MMC) password" button
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Old 04-29-2021, 13:58   #3 (permalink)
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Thank you for your reply. But I could not find the button
Erase e(MMC) password
Which version of EasyJtag must I use?
I tried Erase eMMC button but it did not work - EasyJtag hanged.
Thank you
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Old 04-30-2021, 20:51   #4 (permalink)
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Anyone please can show me that button
Quote:
try to press "Erase e(MMC) password" button
?
I did not find it

Thank you
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