2024年9月28日 星期六

Samsung A70 Upgrade Fail ( 更新失敗後的救援)

 

Issue description:

Upgrade fail and show below information









[

Partition system

Reason system: Hash of data does not match digest in the descriptor(3).


Root Hash in (system) : FCD1B6EB7E. (VBMETA):7C7A4A6C2E

SAMSUNG system, A7050ZHU5BTC8, 30189876R

VBMETA A7050ZHU5ATA2, 28579713R


Downloading...

Do not disconnect USB cable
durint the software upgrade


Reason
Data key and AP key not mapping !?



Resolve Issue

1. Check exist firmware version

    From above picture, we found the original firmware version 

    is A7050ZHU5ATA2

2. Download proper firmware which match above and samfw tool 

      (here I use SamFw Tool4.9)



3. Flash 4 files and remember choose HOME_CSC in CSC part (to keep data & app)

(3.1) Open SamFW Tool and choose "SAMSUNG" and "Odin Flash"

(3.2) Choose proper firmwares (eg. BL_xxx, AP_xxx, CP_xxx, 

        HOME_CSC_xxx)

(3.3) Prese Flash to burn. (* NOT CHECK "NAND erase")







Reference:


  1. Upgrade fail issue: https://r1.community.samsung.com/t5/galaxy-a/hash-of-data-does-not-match-digest-in-descriptor-2nd-3/td-p/3157867


  1. CSC or HOME_CSC
    https://hackmd.io/@cimeesia/BJpLf_g9i#CSC-%E6%88%96%E6%98%AF-HOME-CSC-%EF%BC%9F%E5%93%AA%E5%80%8B%E6%AA%94%E6%A1%88%E6%98%AF%E4%BD%A0%E5%9C%A8-Odin-%E4%B8%AD%E8%A9%B2-flash-%E7%9A%84%EF%BC%9F

  2. What is VBMETA
    https://xdaforums.com/t/vbmeta-odin-custom-rom-avb-issues-with-flashing-custom-rom-for-samsung-nav-tab-active3-due-to-android-verified-boot-avb.4607801/

  3. SamsungA7050 firmware
    https://samfw.com/firmware/SM-A7050/BRI

  4. Samsung Tool:SamFw Tool 4.9
    https://samfw.com/blog/samfw-frp-tool-1-0-remove-samsung-frp-one-click

  5. Samsung official tool (odin)
    https://samfw.com/blog/download-odin-all-version