[How-To] Downgrade back to Stock M/Custom ROMs without QFIL [Firmware Files]

Discussion in 'Guides & [How-To]' started by Frozen_Lemon, Oct 12, 2017.

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Did it work properly?

  1. Yes

    3 vote(s)
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  2. No

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  1. Frozen_Lemon

    Frozen_Lemon On to 13 :p ;) YUREKA Yuser Yureka Black YUser

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    #Disclaimer
    I'm not responsible for bricked devices.
    
    The zip was tested thoroughly
    yet in case if something may go
    southwards, don't blame me..
    
    Instead use QFIL to restore.
    Heyo peeps,

    We got N via OTA/QFIL and it was a nice update, but with that came a nasty issue, custom ROMs causing bootloops.
    The only way to downgrade to M was using QFIL tools, which is a lil bit inconvenient as the internal gets wiped.

    So I made a zip which would let us switch between Stock N and Stock M/Custom ROMs without the use of QFIL.

    Prerequisite(s):
    • TWRP by @Pranay Narang.
    • Custom ROM zip/ Stock M backup/ Stock N backup (link given in the 3rd post)


    To downgrade to Stock M (Flashing custom ROMs)
    • Boot to TWRP.
    • Take a nandroid backup (if you ever want to go back to Stock N).
    • Flash the zip given below.
    • Restore the nandroid backup of stock M (if you have it) or Flash the custom ROM zip (clean flash obviously :p)
    • Reboooooot.
    Link: M-Firmware

    To move back to Stock N.

    In case if you people feel like moving back to Stock N.
    • Boot to TWRP.
    • Flash the zip given below.
    • Restore the stock N backup which you took.
    • Wipe Cache.
    • Rebooooooot.
    Link: N-Firmware

    Credits:
    • Yu for the device and desperation & inspiration :p
    • Qualcomm, Tinno and Whoever made the firmware files.
    • @Aditya Kalway for providing the N-Firmware files.
    • @YU-B_user for the details of the files.
    • Me for making the zip ;)
    • And me again for testing it many times :p
    • @Saikatrockz for reconfirming.
    • If I missed someone, just ping me :)

    Enjoy jumping between ROMs guys ;)
     
    Last edited: Oct 15, 2017 at 4:45 PM
  2. Frozen_Lemon

    Frozen_Lemon On to 13 :p ;) YUREKA Yuser Yureka Black YUser

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    Heads up and Pointers:
    • Never, I say, never flash a custom ROM after you flash "N-Firmware". You'll end up with a soft bricked/bootlooping Garlic.
    • Flashing "M-Firmware" will revert all the Critical Partition of you phone to that of stock M, meaning you'll be facing bugs like system freeze while editing /system Partition, which is fixed in stock N's firmwares.
     
    Last edited: Oct 12, 2017
  3. Frozen_Lemon

    Frozen_Lemon On to 13 :p ;) YUREKA Yuser Yureka Black YUser

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    FAQ:
    1. Does this zip include system partition?
      • No, it doesn't. You have to backup your own system.
    2. Does this wipe my internal?
      • No....Duh, what's the use of this zip then?
    3. What all partitions should I wipe/backup?
      • Dude, its your choice ;) but if you ask me I'd say system,data and boot.
     
    Last edited: Oct 15, 2017 at 4:46 PM
  4. Frozen_Lemon

    Frozen_Lemon On to 13 :p ;) YUREKA Yuser Yureka Black YUser

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    Useful Links:
     
    Last edited: Oct 15, 2017 at 4:46 PM
  5. Frozen_Lemon

    Frozen_Lemon On to 13 :p ;) YUREKA Yuser Yureka Black YUser

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  6. Pranay Narang

    Pranay Narang ANDROID GEEK Recognized Developer QRS YUPHORIA Yuser YUREKA Yuser Retired Moderator Yureka Black YUser

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    Cool stuff
     
    theRaJaK1601 and Frozen_Lemon like this.
  7. Frozen_Lemon

    Frozen_Lemon On to 13 :p ;) YUREKA Yuser Yureka Black YUser

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    Thanks Beast :D
     
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  8. Shoaib05

    Shoaib05 An expert in anything was once a beginner. Recognized Developer YUREKA PLUS Yuser Yureka Black YUser

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    Very useful. Thanks for sharing this.
     
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  9. kushal shah

    kushal shah YUPHORIA Yuser Yureka Black YUser

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    Which partitions to backup in nanroid backup
     
  10. Frozen_Lemon

    Frozen_Lemon On to 13 :p ;) YUREKA Yuser Yureka Black YUser

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    The usual backups you guys take while flashing a new ROM.
     
  11. kushal shah

    kushal shah YUPHORIA Yuser Yureka Black YUser

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    U include system partition?
     
  12. Prinz Joz

    Prinz Joz ~ Prince

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    Awesome guide
    Very helpful !!!
    Thanks and nice work !!!
     
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  13. Frozen_Lemon

    Frozen_Lemon On to 13 :p ;) YUREKA Yuser Yureka Black YUser

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    Second Post bro :)
     
  14. Aditya Kalway

    Aditya Kalway

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    Awesome Bro! Really Appreciate it! Great work! :)
     
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  15. Saikatrockz

    Saikatrockz Being cool is being your own self... YUPHORIA Yuser YUREKA Yuser Yureka Black YUser

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    Awesome.. good job bro
     
  16. Ps rawat

    Ps rawat

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    Nice guide bro...good work..
     
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  17. Frozen_Lemon

    Frozen_Lemon On to 13 :p ;) YUREKA Yuser Yureka Black YUser

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    Thank You :)
    :)
    Thank you ^.^
     
    Last edited: Oct 15, 2017 at 4:47 PM
  18. Frozen_Lemon

    Frozen_Lemon On to 13 :p ;) YUREKA Yuser Yureka Black YUser

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    Thank you and You're welcome :)
     
  19. Saggyspidey99

    Saggyspidey99 YUREKA PLUS Yuser Yureka Black YUser

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    This zip worked for me <3
    Excellent work @Frozen_Lemon

    I flashed this on custom N to go to STOCK N.
    and everythng went so good :)

    booted successfully :)
    Thankyou.
     
  20. prashant099

    prashant099

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    Someone please post an untouched N firmware, as this firmware by prince is Magisk patched, i don't know why but I'm unable to sign into snapchat. That's the reason I want someone to upload a clean untouched N firmware backup.
     

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