[Guide] Simple way to return to stock for x720

[marik1]

Hello. Last time I wanted to return to stock x720 ROM, but I won't flash US version. Tried on myself it. My solve is TWRP-based. Go on:
Before you start, read all below.
1. Prepare all what you need:

1.1) Stock Recovery Image for our phones, it can be older (there is from 5.8, it's just for install update, which will update itself and will be in english)

https://www.androidfilehost.com/?fid=529152257862668751

-- You have to unzip, then get "recovery_stock.img" file into your phone
Source: https://forum.xda-developers.com/le-pro3/how-to/leeco-le-pro-3-root-t3476560

1.2) Stock ROM Zip of any version (there is the newest** from official site)

http://107.155.49.13/222/8/95/scmau...ndtype=0&vrtmcd=109&buss=0&cips=87.105.138.35

-- You have to get ZIP into your main folder (called /SDCARD/ or Internal Storage) and rename it as "update.zip"
Source: https://bbs.le.com/zt/eui/le_pro3.html

2. Leave your ROM
2.1) Turn on your phone into TWRP
2.2) Do a standard wipe
2.3) Install image of Stock Recovery (as Recovery)
2.4) DON'T turn off the phone, after correct flash go back to main menu, then go "Reboot" and check "Recovery"
If you did all right, you should be on LeEco's Recovery. If it is on TWRP, something went wrong.

3) Install ROM
3.1) Yes, I know. Linked recovery is in Chinese, but LeEco didn't change interface. First is Update System and you select it. Second is Clear Data and you DON'T select it.
3.2) Gray button is Restart and you shouldn't push it. Second is blue and means Start. You should push blue (Start).
After ~10 mins, your phone will be booted again. Your system should be ready to work

4) Update
After configuration, your phone is ready to work.
** The newest version of x720 is 5.9.023s but after small OTA. You can do it trough system updater.
After all, you should do Restore Factory Settings with Format virtual SD Card - it will clean dirt of TWRP files etc.

5) Protips
If you can't begin because can't transfer files into mobile, you should try do "adb push", TWRP can be also installed into ADB. Ask if it is trouble.
For working play store, you should download APK of Play Store and Play Services (prefer 440 version) from sites like ApkMirror.com.
Install looks like bug-free and doesn't contain weird files.

OFC you do it at your own risk.

 

[marik1]

<DIG> because you like to flash x727 ROM in x720 devices. Why so risky, why you try to brick your devices?

 

[marik1]

Another one dig. If sbd stuck on TWRP without ROM, try to transfer trough file explorer or adb push files. If you have US ROM, you should get band repair (look there: https://forum.xda-developers.com/le-pro3/how-to/flashing-guide-roundup-leeco-le-pro-3-t3511901 ).

 

[tsongming]

Let's be clear and not Obfuscate things.

<DIG> because you like to flash x727 ROM in x720 devices. Why so risky, why you try to brick your devices?

There is no risk with an unlocked X727 or X720 flashing each others Roms. The phones are identical in every way except that some X720's have 6GB ram while the X727 has just 4GB ram. Otherwise its the same phone and there is no conflict with the software.

If someone with a X720 flashes a recovery from a a X727, they only need to flash their firmware and modem file (I guess) to return fully to stock as shipped. The same principle applies to the X727 flashing software intended for the X720

The firmware for both phones can be found here : https://sourceforge.net/projects/lineageos-on-leeco/files/firmware/ ( Posted by Codeworks)
The modem NON-HLOS.img files can be flashed ( But they are actually not really needed when the bands can be turned on manually)

Finally, a sincere thanks for your links.

Although several recoveries, and the original stock : EUI 5.8.21s_le_zl1.zip is already posted several times throughout XDA ( including my own full recovery) It never hurts to have more links available to us. Especially since over the course of time, these links are often broken; Especially on free server pages, or chinese Leeco pages. So it helps to refresh an old post, and keep these things current.

 

[marik1]

Only 1 link not works (source is 2 lines below it). Before it there was only QFIL or manual installation guides. It's just simply. Few people broken their phones.

 

[mchlbenner]

Only 1 link not works (source is 2 lines below it). Before it there was only QFIL or manual installation guides. It's just simply. Few people broken their phones.

go through the thread their is another one.

Sent from my SM-A730F using xda premium

 

[AlanRocker]

I did the whole process, but when updating in stock recovery with "update.zip" gives error: corrupt.

I tested with 2 stock ROMs 17s and 28s.

 

[marik1]

Are you sure that you're using LEECO recovery and LEECO correct zipped ROM? You can't flash LeEco's ROM in TWRP and correct ROM should have files in main zipped folder.

Official ROM from LeEco website:
http://g3.letv.cn/266/27/29/scmauto..._LEX720-CN-FN-WAXCNFN5902607031S-5.9.026S.zip
Recovery is there:
https://androidfilehost.com/?fid=529152257862668751

Get both of them, rename ROM as "update.zip", place it in main folder, then try to install stock recovery and trough stock recovery "update ROM". If it won't work, please make photo, i'll help you.