EMMC CID Patcher Tool

EMMC CID Patcher Tool Process

EMMC CID Patcher is a Windows base tool by Knotthailand that is used for calculating the CRC-7 eMMc JEDEC.

CID Original:
- Copy the original CID from the eMMC chip using your ISP (In-System Programming) tool (e.g., ISPT001).
New SN (Serial Number):
- Enter a new serial number (SN) with a numeric value (0-9) as recommended.
Change SN CID - CRC7 Calculator:
- Use the tool to calculate the CRC-7 value based on the new CID you are creating. This is crucial as the CRC-7 ensures data integrity and proper functionality.
Copy New CID:
- Once the new CID is generated, copy it to your UFI Box.
Patch CID:
- Use the Easy JTAG Plus software to patch the CID directly to the eMMC firmware. This usually involves:
  - Writing the new CID to the eMMC.
  - Ensuring that the firmware is compatible with the new CID.
Medusa eMMC Firmware:
- Like the Easy JTAG process, use the Medusa software to patch the CID.
- Make sure you create the new CID from another box first, as indicated.
Write Medusa PRO:
- Finally, write the new CID using the Medusa PRO tool.