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SM T525 - mmc read fail - flash read failure

Discussion in 'Android Devices' started by Max Witzker, Jul 17, 2020.

  1. Max Witzker

    Max Witzker Lurker
    Thread Starter

    Canot flash Firmware

    Pls see pictures

    Anzeige am Tablet.jpg wie beschrieben mit OC2.jpg

    Hope for help
     


  2. ocnbrze

    ocnbrze DON'T PANIC!!!!!!!!!

    your tablet is rooted. why do you want to flash firmware?
     
    MrJavi likes this.
  3. MrJavi

    MrJavi Android Expert

    I'd try 4 files
    - No pit is necessary (it's in the CSC and Odin will apply it automatically).
    - Uncheck "repartition" and "f. reset time" before flashing and see if that works.

    If not you'll have to extract the .pit partition from the csc.

    https://forum.xda-developers.com/galaxy-s7/how-to/updato-largest-online-firmware-archive-t3413785

    An alternative might be to flash custom recovery, rom/root/kernel but to do so would require an unlocked bootloader as well as Developer Options and usb debugging would need to have be enabled in your previous phone system settings.
     
    ocnbrze likes this.
  4. MrJavi

    MrJavi Android Expert

    ocnbrze likes this.
  5. svim

    svim Extreme Android User

    You might get better results using an older version of the Odin utility, one that's suitable for the firmware version you're using. Odin isn't the most backwards compatible utility so using the latest version on dated hardware isn't a sure thing. Go here and select the Odin version for that matches the ROM you're using:
    https://www.droidviews.com/download-odin-tool-for-samsung-galaxy-devices-all-versions/
    Since apparently your PIT has been been corrupted or deleted, you do need to restore your Tab's partition table when you re-flash.
    https://www.sammobile.com/samsung/galaxy-tab-pro/firmware/#SM-T525

    (side note, it might be more revealing to just copy-and-paste the actual text from Odin than posting a fuzzy screen capture)
     
    ocnbrze likes this.
  6. Max Witzker

    Max Witzker Lurker
    Thread Starter

    Many THX for your replies
    I forgot to say I have also TWRP 2.8.7.0 installed.
    I tried so many things that I think it will be the best to start from scratch to have a stable start?
    What do you think?

    Should I wipe everything?
    Format ?
    Factory reset ?
    or what to do ?

    When I leave TRPW there is the message

    upload_2020-7-18_7-54-34.png

    Shall I install?
     
    #6 Max Witzker, Jul 18, 2020
    Last edited: Jul 18, 2020
    MrJavi likes this.
  7. Max Witzker

    Max Witzker Lurker
    Thread Starter

    1 Right odin
    upload_2020-7-18_7-39-50.png

    2 What firmware to choose?
    upload_2020-7-18_7-39-9.png
     
    #7 Max Witzker, Jul 18, 2020
    Last edited: Jul 18, 2020
    MrJavi likes this.
  8. Max Witzker

    Max Witzker Lurker
    Thread Starter

    Or should I take This from Frija:
    upload_2020-7-18_7-45-34.png
     
    MrJavi likes this.
  9. MrJavi

    MrJavi Android Expert

    I wo
    I wouldn't advice letting TWRP popup install root and I say this from personal experience. Magisk or SuperSu .zip, custome root kernel or follow the advice given by the developer of the custom rom is what I would advice. :)
     
    #9 MrJavi, Jul 18, 2020
    Last edited: Jul 18, 2020
  10. MrJavi

    MrJavi Android Expert

    Although @svim and I agree that SamMobil has the the correct firmware for your device, I would look to Frita as my first choice.

    SamMobile is not "FREE" firmware. The old slow free downloads are a thing of the past and even way back then when they were, the super turtle slow free downloads would often end in a mismatched Md5 check sum.
    Frita is "FREE" :)
     
  11. Max Witzker

    Max Witzker Lurker
    Thread Starter

    THX OK
    NOT letting TWRP popup install root

    OK Software from Frija as in Picture above
    T525XXUAOC2_T525DBTANI1_T525XXUANC1_HOME.tar.md5

    Odin for Kit Kat 3_v3.09

    is ready now!

    Something to do in TWRP
    Repair, Format, Wipe, .....?
    Before flashing?

    Root again? with
    CF-Auto-Root-picassolte-picassoltexx-smt525.zip
    When the tablet was working I rooted with magisk

    Some flashing advices?
     
    MrJavi likes this.
  12. MrJavi

    MrJavi Android Expert

    For the most part, flashing official factory firmware should be enough. However, in some cases, the old system root method su- binaries remain. As your previous root method was Magisk systemless root that shouldn't be a problem but to be safe rather than sorry , do a factory reset wipe in custom recovery.

    Before you start, make a Nandroud back up of all partitions. Even a broken backup may save your device. I once had a broken back up and the efs partition saves my phone.

    Swipe factory reset two or three times
    Format data by typing yes
    ignore su binary and/or no OS popups when going into download mode.


    I prefer going from least adversive method and start with Odin 4 files.

    • BL stands for bootloader

    • AP represents the system partition (possibly stands for Android partition); under previous Odin versions, this was called "PDA"
    • CP represents your modem
    • CSC stands for Consumer Software Customization
    and be very careful to place each in their correct slot via Odin.

    If that works great, done deal. :)

    If not :( , your left with the more risky .pit (partition information table). Flashing the .pit is dangerous, so be careful. A mistake here can leave your device without an international mobile equipment identifier (imei). Ouch!!!


    Good luck and welcone to Android Forums @Max Witzker :)
     
    #12 MrJavi, Jul 18, 2020
    Last edited: Jul 18, 2020
  13. Max Witzker

    Max Witzker Lurker
    Thread Starter

    THX for taking care
    I dont have custom recovery I have TWRP 2.8.7.0 installed.
    How to get the custom recovery?

    I have now from Frija:
    T525XXUAOC2_T525DBTANI1_T525XXUANC1_HOME.tar.md5
    Where do I get this Firmware with 4 files?

    Hope for Help
     
  14. svim

    svim Extreme Android User

    TWRP is a custom Recovery. When you flash a stock Samsung ROM, this will also install the stock Samsung Recovery. You'll need to use the Odin utility again to flash TWRP. Also keep in mind there's a difference between a Recovery (boot process) and a root manager (post boot).
    https://twrp.me/Devices/Samsung/

    Regarding sammobile, it claims to verify the ROMs on its servers to be valid and unaltered, and obtained from manufacturers and carriers. You do need to sign up for an account with them to access archived firmware, otherwise they do intentionally limit the download bandwidth from their servers for free users. Wherever you obtain your ROMs, just be mindful of their sources. And do NOT mix and match ROMs, only flash ROMs that are for your exact model and your carrier. ROMs are not interchangeable. Every phone model has its own unique hardware configuration and every ROM contains software, drivers, and firmware that only match that phone model.
     
  15. Max Witzker

    Max Witzker Lurker
    Thread Starter

    Now flashed the recommended Firmware from Frija:
    T525XXUAOC2_T525DBTANI1_T525XXUANC1_HOME.tar.md5
    with recommended Odin for Kit Kat 3_v3.09
    upload_2020-7-18_22-6-31.png
    upload_2020-7-18_22-7-48.png

    Why is write protection enabled?

    what next??
     
  16. svim

    svim Extreme Android User

    The Odin message box states a problem you need to address. The partition table in your device's internal storage is either corrupted or missing. You need to restore your device's PIT file when you flash.
     
  17. Max Witzker

    Max Witzker Lurker
    Thread Starter

    OK THX
    But I dont Know HowTo!

    Can you be so kind and advice me pls.
     
  18. svim

    svim Extreme Android User

    The PIT file is minuscule text file, it should be buried in the CSC of the firmware file you downloaded. More instructions here:
    https://technastic.com/samsung-pit-file-download/
    Stress again that the PIT file is also very version specific, like the ROM itself. Do not mix and match using a partition table from a different model phone. It needs to correspond with your model and your carrier. (i.e. -- if you tried flashing the wrong ROM previously that would be a likely reason why it's necessary to restore your phone's PIT).
     
  19. MrJavi

    MrJavi Android Expert


    Try flashing 4 files like the image blow

    20200719_144254.png

    If you don't have the pit then extract it from the csc and place it in the appropriate Odin slot.
     
  20. Max Witzker

    Max Witzker Lurker
    Thread Starter

    Ok THX
    But I don't have this 4 files!

    Pls advise me where to get them.
     
    MrJavi likes this.
  21. MrJavi

    MrJavi Android Expert

    You have to extract them, just do a search on how to. I believe I posted a link above
     

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