Summary

[randxor]

I've read most of the x722 forum,and it's going aroumd in circles, people asking the same questions, multiple misconceptions and ambiguous answers.

So:

1. Le eco le pro 3 is called x720 and has snapdragon 821, this thread is for le eco le pro 3 elite which is called x722 and has a snapdragon 820
2. Stock roms are 20s and 26s, they come with eui, android version 6
3. Many phones come with modified 20s or 26s whih excludes some chinese app and add gapps
4. stock 26s has a locked bootloader, information about stock 20s is scarce
5. batyan has posted a a dev rom which you can flash with the official stock recovery, as a result you can unlock your bootloader. Ie. you get an unlocked bootloader
6. it is recommended to flash batyan's dev rom before trying to flash twrp regardless of the rom your phone came with(you shouldn't be able to flash anything if your bootloader is locked, but I've read about bricks, so maybe some factory roms allow flashing custom recovery but will then brick because the flashed recovery is not official)
7. if you flash twrp and try flashing a stock rom after that, you get brick because the stock rom includes a locked bootloader that won't like that you have twrp instead of stock recovery
8. unbrick: there is a qfil rom for x720, but will not work on x722, maybe it will with some modifications. No qfil for x722 has been released yet.
   No info at rifraf or other jtag boxes. Maybe someone will think of a jtag method to unbrick.
9. x720 and x722 share kernels or so it seems, their respective cpus are snapdragon 821 and 820, the difference comes from a gpu blob and some configs which include the name of the cpu
10. you can use twrp from CrisbalGreece or use the x720 one, but you need to extract a part of it, since it somehow differs
11. people are reporting problems related to cameras, deep sleep, slow ui, bad cpu governors, no se linux, no encryption, ir port, bad connectivity, quick charge, leds, buttons, fingerprint reader

Let's keep things simple, if you notice anything wrong or want to add something, please comment.

My next intention is to clarify what are the limitations imposed on custom roms, can we get official support for them, how are they build, etc. We need tutorials on how to build twrp and the custom roms and what makes them custom.

 

[F.J.V]

I've read most of the x722 forum,and it's going aroumd in circles, people asking the same questions, multiple misconceptions and ambiguous answers.

So:

1. Le eco le pro 3 is called x720 and has snapdragon 821, this thread is for le eco le pro 3 elite which is called x722 and has a snapdragon 820
2. Stock roms are 20s and 26s, they come with eui, android version 6
3. Many phones come with modified 20s or 26s whih excludes some chinese app and add gapps
4. stock 26s has a locked bootloader, information about stock 20s is scarce
5. batyan has posted a a dev rom which you can flash with the official stock recovery, as a result you get an unlocked bootloader
6. it is recommended to flash batyan's dev rom before trying to flash twrp regardless of the rom your phone came with
7. if you flash twrp and try flashing a stock rom after that, you get brick because the stock rom includes a locked bootloader that won't like that you have twrp instead of stock recovery
8. unbrick: there is a qfil rom for x720, but will not work on x722, maybe it will with some modifications. No qfil for x722 has been released yet.
   No info at rifraf or other jtag boxes. Maybe someone will think of a jtag method to unbrick.
9. x720 and x722 share kernels or so it seems, their respective cpus are snapdragon 821 and 820, the difference comes from a gpu blob and some configs which include the name of the cpu
10. you can use twrp from CrisbalGreece or use the x720 one, but you need to extract a part of it, since it somehow differs
11. people are reporting problems related to cameras, deep sleep, slow ui, bad cpu governors, no se linux, no encryption, ir port, bad connectivity, quick charge, leds, buttons, fingerprint reader

Let's keep things simple, if you notice anything wrong or want to add something, please comment.

My next intention is to clarify what are the limitations imposed on custom roms, can we get official support for them, how are they build, etc. We need tutorials on how to build twrp and the custom roms and what makes them custom.

Hi. Incorrect 5 and 6.

5. All EUI roms come with locked bootloader. Stock 26S (and official WIXCNFN5802005041S) prevent you from unlocking, others (20S) NO.

5.1 The only way to get out of an official rom that does not let unblock bootloader, is to install another official rom that allows it (official is NOT via fastboot). Currently the only official rom that exists, which allows unlock, is 01D, but when there is another one, it can be used as well.

6. This is incorrect. You can install TWRP from any ROM that allows you to unlock bootloader. There is no danger in installing twrp as long as it is compatible with X722. The roms that do not allow unlocking (26S stock) simply prevents you from installing anything that is not official, there is no danger because it DOES NOT LEAVE YOU.

There is a fake legend about X722. The only danger is to install an incompatible rom that prevents you from accessing recovery (which is difficult) or install 26S stock (or official WIXCNFN5802005041S) from TWRP or other recovery other than the official one.

Greetings.

 

[randxor]

Hi. Incorrect 5 and 6.

5. All EUI roms come with locked bootloader. Stock 26S (and official WIXCNFN5802005041S) prevent you from unlocking, others (20S) NO.

5.1 The only way to get out of an official rom that does not let unblock bootloader, is to install another official rom that allows it (official is NOT via fastboot). Currently the only official rom that exists, which allows unlock, is 01D, but when there is another one, it can be used as well.

6. This is incorrect. You can install TWRP from any ROM that allows you to unlock bootloader. There is no danger in installing twrp as long as it is compatible with X722. The roms that do not allow unlocking (26S stock) simply prevents you from installing anything that is not official, there is no danger because it DOES NOT LEAVE YOU.

There is a fake legend about X722. The only danger is to install an incompatible rom that prevents you from accessing recovery (which is difficult) or install 26S stock (or official WIXCNFN5802005041S) from TWRP or other recovery other than the official one.

Greetings.

Thanks for reading it and takig the time to comment.

5. Basically speaking, I don't see any mistakes in my information. To unlock, you need batyan's rom. (as there is no other official rom that allows unlocking).People have reported possible issues with unlocking on factory 20s regardless of whether their phones came with 20s modified or stock. I don't want to make guarantees based on blacklist. Ie. Tell people that if the version is not X it's all good, since there are many versions those phones come with.

6. I don't see how your information differs with mine.

 

[F.J.V]

Hello, there is only one point where I disagree with you. What you say about points 5 and 6 DOES NOT HAVE ANYTHING TO SEE, with what I say.

You say in 5)batyan has posted a a dev rom which you can flash with the official stock recovery, as a result you can unlock your bootloader. Ie. you get an unlocked bootloader

I say in 5) All roms come with locked bootloader. 26S stock DOES NOT let unlock.

You say in 6)it is recommended to flash batyan's dev rom before trying to flash twrp regardless of the rom your phone came with(you shouldn't be able to flash anything if your bootloader is locked, but I've read about bricks, so maybe some factory roms allow flashing custom recovery but will then brick because the flashed recovery is not official)

I say in 6) DO NOT install 01D to install TWRP. It is unnecessary and wasted time.

Now, if you keep thinking we say the same, it seems perfect .

Greetings.

 

[sk8223]

Hello, there is only one point where I disagree with you. What you say about points 5 and 6 DOES NOT HAVE ANYTHING TO SEE, with what I say.

You say in 5)batyan has posted a a dev rom which you can flash with the official stock recovery, as a result you can unlock your bootloader. Ie. you get an unlocked bootloader

I say in 5) All roms come with locked bootloader. 26S stock DOES NOT let unlock.

So what about this user, who reports that his device is already unlocked in fastboot mode without him having to do anything? Is it actually unlocked or no? https://forum.xda-developers.com/showpost.php?p=75160935&postcount=46

You say in 6)it is recommended to flash batyan's dev rom before trying to flash twrp regardless of the rom your phone came with(you shouldn't be able to flash anything if your bootloader is locked, but I've read about bricks, so maybe some factory roms allow flashing custom recovery but will then brick because the flashed recovery is not official)

I say in 6) DO NOT install 01D to install TWRP. It is unnecessary and wasted time.

Greetings.

EDIT: Whoops, wrong information. It wasn't you that said that, but another user.

Also, can I flash stock ROMs through TWRP or no? Why? Say I want to go from LineageOS to Banggood 20s, or Gearbest 20s.

I'm really confused here.

 

[randxor]

Can you confirm that regardless of the rom, trying to unlock the bootloader will not lead to brick? And that if it says that it's unlocked, it's really unlocked?

Can you confirm that you can flash twrp only if it's unlocked? Because if you're able to flash twrp with a locked bootloader it's obvious that you will get a brick.

 

[randxor]

So what about this user, who reports that his device is already unlocked in fastboot mode without him having to do anything? Is it actually unlocked or no? https://forum.xda-developers.com/showpost.php?p=75160935&postcount=46



But apparently some 20s ROMs don't allow unlocking. Like the Banggood 20s ROM. You said this yourself: https://forum.xda-developers.com/showpost.php?p=74893268&postcount=91

Maybe the Banggood ROM is based on WIXCNFN5802005041S. IDK.

Also, can I flash stock ROMs through TWRP or no? Why? Say I want to go from LineageOS to Banggood 20s, or Gearbest 20s.

I'm really confused here.

Well, I've mentioned it above. From what I've read it seems stock roms include bootloaders which are locked. Flashing with twrp will lead to having a locked bootloader plus tqrp and stock stuff. The locked bootloader will see that you have twrp instead of stock recovery and brick you. Bad bootloaders..

 

[F.J.V]

So what about this user, who reports that his device is already unlocked in fastboot mode without him having to do anything? Is it actually unlocked or no? https://forum.xda-developers.com/showpost.php?p=75160935&postcount=46



But apparently some 20s ROMs don't allow unlocking. Like the Banggood 20s ROM. You said this yourself: https://forum.xda-developers.com/showpost.php?p=74893268&postcount=91

Maybe the Banggood ROM is based on WIXCNFN5802005041S. IDK.

Also, can I flash stock ROMs through TWRP or no? Why? Say I want to go from LineageOS to Banggood 20s, or Gearbest 20s.

I'm really confused here.

Hi.
The bangood roms can be unlocked. I have never said that a bangood rom can not be unlocked, but I do not know if they ever change.

But that's not a problem, you can or can not, there is no danger to try. If you can not then and only then go through 01D first, there is no danger of brick.

I do not know if the ROM 26 of bangood that you mention came with bootloader unlocked or the user or someone unlocked it without realizing it. The important thing is that that rom can be unlocked, because it's not a 26S stock, it's a 26S modified. The bangood 26S does NOT have the problem of preventing the unlocking, at least until now, but as I said before, there is no danger, you can or can not, there is no danger of brick to try.

I have NEVER said that some bangood 20s can not be unlocked. I have the 20S of bangood and IF it can be unlocked, and IF you can install TWRP without first installing 01D.

I have commented that there are some 20S, that I do not know who sells them, but I do not think it is bangood, which does not allow unlocking, because it brings the same system as the 26S stock, it is also a 20S stock, it is not the modified 20S of bangood. That ROM I said it is the WIXCNFN5802005041S, that whenever stock has the same locking system as the 26S, but if it is not stock and have already modified it, I suppose they take away the blocking system.

I have a copy of that rom, but in fastboot format, and it comes with its own recovery, therefore if the rom exists, there may be terminals that have it installed. I do not publish it because it is able to brike a terminal if someone installs it without original recovery. But the fault is not TWRP is the very ROM that has that system of "protection" before modifications.

I hope it has been a little clearer.

Greetings.

P.D. The answer was from the previous quote, I see that something has changed but I guess it is understood

 

[sk8223]

Hi.
The bangood roms can be unlocked. I have never said that a bangood rom can not be unlocked, but I do not know if they ever change.

Oh whoops, that wasn't you that I quoted! It was a different person. I apologize. I don't know why I didn't read the username.

Also, can you please confirm whether or not we can flash stock ROMs through TWRP? Does the stock ROM actually contain the stock bootloader, as randxor surmises?
Say, if we want to go back to a stock 20s ROM from a custom ROM. Thanks.

But the fault is not TWRP is the very ROM that has that system of "protection" before modifications.

I know this applies to the official 26s ROM, but not the stock 20s vendor ROMs from Banggood and the rest, right? So there's no issue flashing those through TWRP?

 

[F.J.V]

Oh whoops, that wasn't you that I quoted! It was a different person. I apologize. I don't know why I didn't read the username.

Also, can you please confirm whether or not we can flash stock ROMs through TWRP? Does the stock ROM actually contain the stock bootloader, as randxor surmises?
Say, if we want to go back to a stock 20s ROM from a custom ROM. Thanks.



I know this applies to the official 26s ROM, but not the stock 20s vendor ROMs from Banggood and the rest, right? So there's no issue flashing those through TWRP?

I can not keep responding, lack of time, but:

You can not install 26S stock or WIXCNFN5802005041S stock from twrp. It will cause brick, NOT DUE TO TWRP, the rom will.

YOU CAN NOT install TWRP in the 26S stock, BECAUSE YOU CAN NOT. Let's be clear, if you can not unlock bootloader you CAN NOT INSTALL TWRP. It's not that you should not, IT'S THAT YOU CAN NOT. If it is installed it IS NOT 26S STOCK is 26S modified and the bootloader is not blocked.

Let's be clear, I do not know in other terminals, but the LEECO LE PRO 3 ELITE if the bootloader can not be unlocked you CAN NOT INSTALL ANYTHING. YOU CAN NOT INSTALL TWRP, so there is no danger for trying, it will not leave you. You can only install an official ROM in zip format

Finally, the only official LEECOO ROMs I know (and which are in zip signed) are:
26S Stock
01D
WIXCNFN5802005041S stock (but this is not in zip signed, it is in fastboot format)

I do not know more official roms, of those 3 01D does not have the brick system, the other two SI.

As far as I know no terminal is sold with official ROM, except for one that came with WIXCNFN5802005041S. The others are not official, they are modified. Keep in mind that this terminal is not for sale outside China, therefore those that sell are modified to include languages.

With regard to returning to a stock 20S ... the only one I know is the stock WIXCNFN5802005041S so NO, but YES you can return without problems to a 20S like the banggood that is not stock.

If someone knows another stock that says so.

Greetings.

 

[sk8223]

With regard to returning to a stock 20S ... the only one I know is the stock WIXCNFN5802005041S so NO, but YES you can return without problems to a 20S like the banggood that is not stock.

If someone knows another stock that says so.

Greetings.

Alright, so vendor ROMs are a-okay to be flashed through TWRP if you want to return to stock, but not official 26s (as we already know) or WIXCNFN5802005041S, which I think is a Chinese-only ROM? Either way, I won't mess about with either one. This phone bricks too easily. :/

Thanks!

 

[randxor]

So from all of this the implication is that you can try unlocking the bootloader, if unable => flash dev rom, after that unlock and flash twrp and off to custom rom.
Then how did people get bricks? Only flashing stock via twrp?
We need to gather info on different roms: bangood, aliexpress, gearbest, etc.

 

[Shehz4d]

So what about this user, who reports that his device is already unlocked in fastboot mode without him having to do anything? Is it actually unlocked or no? https://forum.xda-developers.com/showpost.php?p=75160935&postcount=46

I see where the confusion resides. So I have changed the title and removed the word stock to include from Banggood.

When I received my phone and I checked, I saw it was on 26S. I thought that given the phone came with 26S, it should be the stock rom which LEECO itself has placed on it. I didn't know that companies like banggood would replaced the rom of LEECO with a modified version they have created (please correct me if I am wrong here).

I have not unlocked it nor have I used an update.zip file through recovery to make it 26S. It came like this. The bootloader appears to be unlocked out of the box from banggood vendor even if the rom shows 26S. The rom have gapps. So I assume that bangood must have installed a 26S rom with gapps which may be similar to CrisBalGreece's 26S version since LEECO STOCK (any version i.e., 20S or 26S) rom does not come with gapps.

If I understand correctly, if you install CBG's 26S on your mobile and check your bootloader through fastboot, you will see that it is unlocked (like in my case) and if you check your rom version, it will be 26S (like in my case). That is why I say that maybe the rom I have received from banggood may be similar to CBG's 26S EUI rom. Can someone who have flashed CBG 26S confirm that, please?

And if it is safe to flash TWRP on CBG's 26S, it should be safe to flash TWRP on my 26S rom. Does that make any sense?

I think this is what @F.J.V tried to explain. If the bootloader is not locked, there is no reason to install 01D since the purpose of 01D is to be used to unlock a locked bootloader only.

Cheers,
S

---------- Post added at 10:02 PM ---------- Previous post was at 09:38 PM ----------

So from all of this the implication is that you can try unlocking the bootloader, if unable => flash dev rom, after that unlock and flash twrp and off to custom rom.
Then how did people get bricks? Only flashing stock via twrp?
We need to gather info on different roms: bangood, aliexpress, gearbest, etc.

I am not sure, but I think when people got their phone, they wanted the latest version of the OS. So when they saw that leeco released a new rom which is 26S (this is the stock rom which needs to be renamed to update.zip and flashed through recovery) and they were on 20S or older. They flashed the 26S from leeco and now their bootloader becomes locked.

They want to flash twrp to use custom rom like PA or LOS, or other.

**** What do they do next?? Were they able to flash twrp or blocked bootloader does not allow twrp to be copied to device?****

This is the part which is confusing. The next step will either succeed or brick the phone. This is the information we need to gather from all people, either brick or not.

Cheers,
S

 

[sk8223]

Then how did people get bricks? Only flashing stock via twrp?
We need to gather info on different roms: bangood, aliexpress, gearbest, etc.

EDIT: flashing 26s without the stock LeEco recovery in place causes a brick.

dakok summed up the different ROMs in an image here: https://forum.xda-developers.com/showpost.php?p=74010858&postcount=23

 

[F.J.V]

Because they flashed 26s, an official update. Just don't flash stock 26s. They got bricks because they updated to stock 26s and then flashed TWRP and then something through TWRP.

dakok summed up the different ROMs in an image here: https://forum.xda-developers.com/showpost.php?p=74010858&postcount=23

You still do not understand it
Brick occurs when:

Install 26S Stock from any ROM, and DO NOT HAVE THE ORIGINAL RECOVERY.

To install 26S Stock without causing brick, INSTALL FROM A ROM EUI through update.zip, AND THAT THE TERMINAL HAS RECOVERY ORIGINAL.

If you install 26S stock from any rom with a recovery other than the original ... brick.

And for the last time, if you have 26S Stock IT IS IMPOSSIBLE TO INSTALL TWRP, I think I have said it more than once

Greetings.

 

[sk8223]

You still do not understand it
Brick occurs when:

Install 26S Stock from any ROM, and DO NOT HAVE THE ORIGINAL RECOVERY.

To install 26S Stock without causing brick, INSTALL FROM A ROM EUI through update.zip, AND THAT THE TERMINAL HAS RECOVERY ORIGINAL.

If you install 26S stock from any rom with a recovery other than the original ... brick.

And for the last time, if you have 26S Stock IT IS IMPOSSIBLE TO INSTALL TWRP, I think I have said it more than once

Greetings.

Alright, but in the end there's very little reason to install stock 26s to begin with. A very troublesome firmware that doesn't seem to bring any improvements to the table. Modded 26s seems to be better.

I wish a mod would sticky this information for others to see.

 

[randxor]

I am not convinced that flashing stock via twrp is the only way to brick and that you can't brick by say somehow flashing twrp with a locked bootloader.(which people are saying should be impossible), but what if one of the modified vendor roms still has sign checks for recovery, boot, etc. but it also allows flashing and says the bootloader is unlocked(maybe the checks are in the rom itself, so even if the bootloader is unlocked, the rom itself isn't)