Storage Lab · eMMC & UFS

eMMC & UFS Storage Diagnosis

Storage failures often appear as flashing errors, dead boot, bootloop, logo hang, or partition failure. Connect storage evidence with verified repair direction — never guess on chip swap without bench data.

Identity

CID / EXT_CSD Review

Read chip identity registers — MID (manufacturer ID), PNM (product name), PRV (revision), PSN (serial), EXT_CSD revision. Critical before replacement.

Tool Log Supported

Health

RPMB / Health Clues

EXT_CSD device life time estimation A/B, pre-EOL info, write protection state, RPMB size — flags pre-failure conditions.

Tool Log Supported

UFS

UFS LU / Provisioning

Logical Unit configuration, provisioning state, UFS descriptor review — required for UFS device identification and replacement match.

Tool Log Supported

Bus Lines

VCC / VCCQ / CLK / CMD / DAT

Power and signal bus verification — VCC (~3.3V), VCCQ (~1.8V), CLK integrity, CMD/DAT continuity. Required before any storage swap decision.

Measurement Supported

Replacement

Compatibility Evidence

CID match, package type, voltage requirement, board photo, and at least one bench confirmation. No compatibility entry without evidence.

✓ Bench Confirmed

Logs

Tool Log Comparison

UFI, EasyJTAG, F64, MTKClient logs from original and replacement chips compared for initialization signature confirmation.

Tool Log Supported

Storage replacement protocol: chip marking photo, datasheet match, CID compatibility, EXT_CSD register check, bus line measurement, tool log signature, bench boot test, field boot test. Without all of these the record stays Reference Only.

Route via Hub Firmware Finder Engine