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  1. #1
    Soundwave
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    System downgrade available !?

    This is quite confusing, so here are details.
    I have ASUS TF300T and it is:
    Unlocked;
    Rooted;
    with TWRP - custom recovery flash;
    with Android 4.1.1 (10.4.2.9)

    On my tablet I manually downloaded the latest firmware upgrade to 4.2 (10.6.1.8) because "automatic" update says there is no newer versions. Then I unzipped once that archive and placed the zip file in main /sdcard/ directory (it's actually built in) and system immediately saw this update. I pressed that exclamation mark, like choosed which package to use, pressed OK and there it is, saying system downgrade available. Anyone knows what is going on?

    I just wanted to be sure. Will I have to reinstall all apps after this update, will this update wipe all data?

  2. #2
    Guide Guru & Forum Administrator
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    Welcome to the forum

    As you are unlocked, rooted & therefore not fully "stock", your post rightly belongs in our development section. so I have moved it for you.

    I don't fully understand why you are getting the message you are, but you seem to be doing the correct things to manually update your device. However, I should warn you that there are issues with updating to 4.2 - I believe you will loose your root & may even "brick" your device.

    I'll try to find the post/s for you that cover that...

    PLEASE Search for existing threads before posting a new one. Thanks.

    Your opinion matters. But should you disagree - please try not to be disagreeable

    Forum guide - here ~~ T100 FAQs - here ~~ Cold boot - here

    Adobe Flash Player & Browser Guide here

    Master Help Guide - here ~~ FAQ malware - here ~~ FAQ e-reading - here
    Mobile OS devices personal pantheon...
    ANDROID: Doogee DG310; SGS; Huawei Y300; Motoroloa Xoom 2ME; Razr; Defy Mini; CnM Touchpad II;
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  3. #3
    Guide Guru & Forum Administrator
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    Here it is - I believe this is the thread on XDA that covers this - don't proceed any further would be my advice...

    ASUS JellyBean 4.2.1 updates - a warning - xda-developers

    PLEASE Search for existing threads before posting a new one. Thanks.

    Your opinion matters. But should you disagree - please try not to be disagreeable

    Forum guide - here ~~ T100 FAQs - here ~~ Cold boot - here

    Adobe Flash Player & Browser Guide here

    Master Help Guide - here ~~ FAQ malware - here ~~ FAQ e-reading - here
    Mobile OS devices personal pantheon...
    ANDROID: Doogee DG310; SGS; Huawei Y300; Motoroloa Xoom 2ME; Razr; Defy Mini; CnM Touchpad II;
    Asus TF101; Lenovo A1; Samsung Tab 2 7.0
    APPLE: iPhone 4s; iPhone 5c; iPhone 6; iPhone 7; iPad 3; iPad Mini 2; iPad Air 2 64gb
    CHROMEBOOK: HP 14-Q010sa Celeron 14 Inch 4GB 16GB Chromebook - White.

  4. #4
    Soundwave
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    At the moment I have TWRP 2.2.1.5. If I would have 2.4.4.0 and could flash full asus firmware then it would be safe to upgrade. You definately know better. Or just wait and see what happens later?

  5. #5
    TRANSFORMER FORUMS LEGEND
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    I would definitely update to the latest TWRP.

    I am not sure if you will retain your apps when you flash the new firmware file, but when you flash the stock firmware it will most likely replace your TWRP with stock recovery. I know this happens on the TF101 when you flash stock even if you are stock rooted with custom recovery.

    Here is what I would do:

    Update to the latest TWRP using GooManager
    Backup using Titanium Backup, copy all contents of your /sdcard/ to USB/microSD/SD/Cloud/PC.
    Reboot to TWRP
    Backup your current config in TWRP
    Install the new firmware
    wipe caches
    Reboot and let it fully reboot to see if it boots, and if you still have all of your apps and such.
    Reinstall TWRP through fastboot.

    If it successfully downgraded, leave it be.
    If it did not work properly, restore your TWRP backup.


    Asus Transformer 16 GB & Dock - Munching on Jelly Beans
    crApple iP*one 5 - Stock

    Just once I want someone to call me Sir without adding you're making a scene.
    - Homer Jay Simpson

  6. #6
    Soundwave
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    Quote Originally Posted by Frederuco View Post
    I would definitely update to the latest TWRP.

    I am not sure if you will retain your apps when you flash the new firmware file, but when you flash the stock firmware it will most likely replace your TWRP with stock recovery. I know this happens on the TF101 when you flash stock even if you are stock rooted with custom recovery.

    Here is what I would do:

    Update to the latest TWRP using GooManager
    Backup using Titanium Backup, copy all contents of your /sdcard/ to USB/microSD/SD/Cloud/PC.
    Reboot to TWRP
    Backup your current config in TWRP
    Install the new firmware
    wipe caches
    Reboot and let it fully reboot to see if it boots, and if you still have all of your apps and such.
    Reinstall TWRP through fastboot.

    If it successfully downgraded, leave it be.
    If it did not work properly, restore your TWRP backup.
    Is it better to install the firmware from Android system or TWRP?
    If something goes wrong while installing, will I be able to restore more or less everything as it was only with TWRP backup?

  7. #7
    Soundwave
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    One more thing. You meant to "downgrade" from 4.1.1 to 4.2 version, right?

  8. #8
    TRANSFORMER FORUMS LEGEND
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    Quote Originally Posted by Klaidonis View Post
    One more thing. You meant to "downgrade" from 4.1.1 to 4.2 version, right?
    By downgrade, I was referring to 4.2 to 4.1.

    You are currently on Android 4.1. I believe you were looking to upgrade to 4.2 and were curious if your apps and data would still be in tact if you flash it through TWRP. I am not sure if it will be or not (which is why I recommended 2 backups, one using an app backup and another using TWRP).

    Then, apply the upgrade to 4.2.

    If you like it, you can stay with 4.2. If not, install TWRP via fastboot and downgrade from 4.2 to 4.1 by restoring your backup from TWRP.


    Asus Transformer 16 GB & Dock - Munching on Jelly Beans
    crApple iP*one 5 - Stock

    Just once I want someone to call me Sir without adding you're making a scene.
    - Homer Jay Simpson

  9. #9
    TRANSFORMER FORUMS LEGEND
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    Quote Originally Posted by Klaidonis View Post
    Is it better to install the firmware from Android system or TWRP?
    If something goes wrong while installing, will I be able to restore more or less everything as it was only with TWRP backup?
    If you have a custom recovery, your android update will fail. It will try to boot to recovery, but only works with stock recovery. In order to change versions (newer or older) you will have to use your custom recovery. Also, flashing the stock firmware will also remove TWRP so you will have to reinstall using fastboot.

    Quote Originally Posted by Klaidonis View Post
    One more thing. You meant to "downgrade" from 4.1.1 to 4.2 version, right?
    By downgrade, I was referring to 4.2 to 4.1.

    You are currently on Android 4.1. I believe you were looking to upgrade to 4.2 and were curious if your apps and data would still be in tact if you flash it through TWRP. I am not sure if it will be or not (which is why I recommended 2 backups, one using an app backup and another using TWRP).

    Then, apply the upgrade to 4.2.

    If you like it, you can stay with 4.2. If not, install TWRP via fastboot and downgrade from 4.2 to 4.1 by restoring your backup from TWRP.


    Asus Transformer 16 GB & Dock - Munching on Jelly Beans
    crApple iP*one 5 - Stock

    Just once I want someone to call me Sir without adding you're making a scene.
    - Homer Jay Simpson

  10. #10
    Soundwave
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    Then, in fact, all I need to do is to get the newest version of TWRP and using it flash 4.2 firmware?

 

 
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