jeudi 30 avril 2015

[GUIDE] Downgrading to KitKat topic


Perhaps this guide will help fellow YU's users who want to downgrade their YU from Lollipop to KitKat:
  1. Download KitKat fastboot images from HERE.

  2. Download fastboot.zip from HERE.

  3. Extact all zips in ONE EMPTY FOLDER.

  4. Open "Terminal Window" from the folder where you extracted all the zip files (right click your mouse and choose "Open command window here"):

  5. Put your phone into fastboot mode (disconnect the phone from PC, turn off the phone, and connect the phone to PC WHILE PRESSING VOLUME UP BUTTON).

  6. After the phone is connected go to the "Terminal Window" you have opened previously, type all the command below (ONE LINE AT THE TIME) and make sure you get an "OKAY" feedback:

    Code:


    fastboot -i 0x1ebf oem unlock
    fastboot -i 0x1ebf erase modem
    fastboot -i 0x1ebf erase boot
    fastboot -i 0x1ebf erase recovery
    fastboot -i 0x1ebf erase aboot
    fastboot -i 0x1ebf erase abootbak
    fastboot -i 0x1ebf erase hyp
    fastboot -i 0x1ebf erase hypbak
    fastboot -i 0x1ebf erase rpm
    fastboot -i 0x1ebf erase rpmbak
    fastboot -i 0x1ebf erase sbl1
    fastboot -i 0x1ebf erase sbl1bak
    fastboot -i 0x1ebf erase tz
    fastboot -i 0x1ebf erase tzbak
    fastboot -i 0x1ebf format system
    fastboot -i 0x1ebf format userdata
    fastboot -i 0x1ebf format cache
    fastboot -i 0x1ebf flash modem NON-HLOS.bin
    fastboot -i 0x1ebf flash sbl1 sbl1.mbn
    fastboot -i 0x1ebf flash sbl1bak sbl1.mbn
    fastboot -i 0x1ebf flash aboot emmc_appsboot.mbn
    fastboot -i 0x1ebf flash abootbak emmc_appsboot.mbn
    fastboot -i 0x1ebf flash rpm rpm.mbn
    fastboot -i 0x1ebf flash rpmbak rpm.mbn
    fastboot -i 0x1ebf flash tz tz.mbn
    fastboot -i 0x1ebf flash tzbak tz.mbn
    fastboot -i 0x1ebf flash hyp hyp.mbn
    fastboot -i 0x1ebf flash hypbak hyp.mbn
    fastboot -i 0x1ebf flash boot boot.img
    fastboot -i 0x1ebf flash recovery recovery.img
    fastboot -i 0x1ebf flash system system.img
    fastboot -i 0x1ebf reboot-bootloader
    fastboot -i 0x1ebf oem unlock
    fastboot -i 0x1ebf format userdata
    fastboot -i 0x1ebf format cache



  7. Welcome back to KitKat, easy wasn't it.









Attached Thumbnails


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Attached Files





File Type: zip Fastboot.zip -
[Click for QR Code]
(665.2 KB)





xda-developers


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