error reading emmc partition


Junior Member
 : Jul 10, 2020
 : 2
 : 0
Connection status: XHCI:HUB3:USB 2.00 High-Speed
Interface: UFI High-Speed
Serial number:
Boot version: 1.05, FW version: 1.13 (Aug 19 2019 23:46:09)
Insertion test... DAT0 not properly connected
Init bus...
VCC: 3.3 V, VCCQ: 1.8 V
Bus: 1 bit (SDR 4MHz)
Access mode: sector mode
Power supply: dual-voltage (1.70-1.95V, 2.7-3.6V)
Card/BGA: BGA (Discrete embedded) - High density MMC
Manufacturer ID: 0x90 (SK Hynix)
Product name: hC8aP0 (0x684338615030), rev: 0x01, serial number: 0x2B699109
Manufacturing date: nov. 2019
CID: 90014A68 43386150 30012B69 9109B6F6
CSD: D0270032 8F5903FF FFFFFFEF 8E400042
Failed to read EXT_CSD !!!

already check cmd and all lines, but same problem

why can be?

model samsung a307g
working state