[TUTORIAL] Easy way for UNLOCK Bootloader an…

All your actions with the phone is at your own risk. The authors are not liable. This is just your choice.
PLEASE read full instructions before you start.
RECOMMENDED ONLY FOR EXPERIENCED USERS.
This was tested ONLY on MEIZU MX4 and ONLY FIRMWARE 4.2.8.2A, ANY OTHER FIRMWARE/PHONE - YOU WILL RECEIVE BRICK PHONE.
(с)

ONLY FOR MEIZU MX4 AND ONLY FIRMWARE 4.2.8.2A. Don't use the that apk on Lollipop or your device will brick

Hello everyone, i changed chinese apk for unlock bootloader, and replaced chinese recovery, on TWRP 2 8.6.0 recovery.

1. Download Flyme OS 4.2.8.2A stock firmware an official webpage Meizu
2. Flash it in stock recovery and select WIPE DATA
3. Get root permission
4. Download and install that APK - drive.google.com/open?id=0B_Gd_o_kBWgLNHFuZW5kMlFzV2s
5. Open that app, and provide root permission.
6. Press "Press to UNLOCK BootLoader" - and wait, you will see "Unlock Finished"
7. After, will be available recovery mode, and you press to "Enter Recovery Mode"
8. Your phone reboot and enters for normal recovery - TWRP 2.8.6.0.

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The Following 4 Users Say Thank You to zaurikk For This Useful Post: [ View ] Gift zaurikk Ad-Free

2nd November 2015, 02:46 PM |#2

Senior Member

Thanks Meter: 21

Thanks for the great work!
At last we're getting closer to opening up our meizu phones.
Can the phone with this, unlocked bootloader flash "I" international roms from OTA?

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2nd November 2015, 10:11 PM |#3

Senior Member

Thanks Meter: 38

How to relock?

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2nd November 2015, 11:56 PM |#4

Senior Member

Thanks Meter: 141

Quote:

Originally Posted by ideosx5

How to relock?

Reflash FLyme rom (with Flyme recovery, be carefull!)

Or flash stock uboot

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6th November 2015, 08:06 AM |#5

Senior Member

Thanks Meter: 21

Successfully upgraded MX4 "A" edition phone to "I" using following method:
Installed 4.2.8 "A" stock firmware.

1. Installed apk method unlock (this thread).
2. Downloaded 4.5.7 "I" firmware, extracted and created system.img using (linux):
$ sdat2img system.transfer.list system.new.dat system.img
for windows, see this guide from Meizufans.
3. Boot into fastboot mode (now unlocked) using "VOL -" + "POWER"
4. fastboot flash boot boot.img
WAIT
fastboot flash system system.img
WAIT
5.Reboot into recovery
6. Full wipe
7. Install super su
8. Reboot

VOILA - 4.5.7 "I"

Remember to block/deactivate system updates once system has booted for first time.

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6th November 2015, 12:03 PM |#6

Senior Member

Rouen

Thanks Meter: 35

Is it possible for someone to upload recovery.img of TWRP please ?

I'd like to try

---------- Post added at 10:16 AM ---------- Previous post was at 09:22 AM ----------

I got it, I'm fixing the splash screen dimensions ahah^^

---------- Post added at 11:03 AM ---------- Previous post was at 10:16 AM ----------

It was a little harder than I expected but it's here : http://www.mediafire.com/download/26...w-recovery.img

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6th November 2015, 12:06 PM |#7

OP Junior Member

Thanks Meter: 9

Quote:

Originally Posted by Learnincurve

Successfully upgraded MX4 "A" edition phone to "I" using following method:
Installed 4.2.8 "A" stock firmware.

Good, but there is easy way

download that rom, and install it for TWRP(select full wipe, include internal storage) - emmaus.pro/MX4_custom_roms/Flyme/4.5.7i_twrp.zip

and there all stock Flyme roms for twrp - emmaus.pro/?dir=MX4_custom_roms/Flyme

Author all rom "nikk3d" russian 4pda users - 4pda.ru/forum/index.php?showuser=2196261

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7th November 2015, 02:42 PM |#8

Senior Member

Thanks Meter: 118

And this method works even on newest firmware, let's say 4.5.6i downgraded to 4.2.8i via 4.0.4i? Or is a easy variant of previous method, patched uboot by meizu remains after 4.5.6i upgrade if i understand, no matter if you downgrate to Kitkat?

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7th November 2015, 07:22 PM |#9

Senior Member

Rouen

Thanks Meter: 35

update for TWRP : http://www.mediafire.com/download/f6...opw/TWRPr5.img
Changelog :
I corrected "Select storage" position, corrected some shifts on the main screen

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19th November 2015, 06:45 PM |#10

Junior Member

Thanks Meter: 1

Quote:

Originally Posted by zaurikk

Good, but there is easy way download that rom, and install it for TWRP(select full wipe, include internal storage) - emmaus.pro/MX4_custom_roms/Flyme/4.5.7i_twrp.zip

and there all stock Flyme roms for twrp - emmaus.pro/?dir=MX4_custom_roms/Flyme

Author all rom "nikk3d" russian 4pda users - 4pda.ru/forum/index.php?showuser=2196261

I have an MX4 originally with Ubuntu touch, I tried to flash 4.5.7i from emmaus.pro.
It failed, updater binary error. I checked the recovery log and it says write error, no space left.
Does anybody have any clue?

Thanks,

Note: I already tried a wipe out (even internal storage). No issues with the cyanogenmod roms from emmaus.pro.

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