ZUK Z2 Pro persist.img files flashable by twrp / adb

[weimerd]

Hi mates,

here we go with the persists.img for Lenovo ZUK Z2 Pro.

So if you deleted them by accident you can try to reflash these:

new added file host for all files: https://www.androidfilehost.com/?w=files&flid=243937

persist.img ZUI 1.9.104:
https://mega.nz/#!0dxzwRrD!0DjKphWCRU-vv4yb1clTqrppVPGzbdaLEc4P7ItX6Ek

persist.img ZUI 2.3.044:
https://mega.nz/#!9QAE3J4I!wMNuXJ9430ihNKUgAmfJJqaB7a13v8qHtTGhCb-3hOE

persist.img ZUI 2.5.462:
https://mega.nz/#!MVZEnQCb!KvKYcHFdxvQEjlRC3zKsvQH316YY3iyNJEV3HE63cDU

persist.img ZUI 3.1.194:
https://mega.nz/#!oURh0ARA!JvliKwO6-bvdobG1qZoXg9CrH1u0zmtLsjFuoCIBoFk

persist.zip FLASHABLE zip ZUI 4.0.233 ST:
https://mega.nz/#!8RJ3hCpS!8cjVHyoOoa6yg9uvgTht71WB1CVCNoQi07GEZMxUR6M

All credits to @crisps


WARNING: these files are not tested. All use to your own risk.
Anyway if you accidentially deleted your persist partition it is worth a try

Flashable by fastboot or twrp. Note: Twrp 3.2.0.0 is not giving you the option to flash persist img. Use a previous Twrp version or flash by adb/fastboot.

TWRP 3.1.0.0 for Z2 Pro:
https://mega.nz/#!ABACiBKD!jPpLuguCoPU58Wq667D3H-YnsoyyXQ505ih0sapAOUY

Enjoy

_______________________________________

HowTo flash with fastboot:

- Download correct adb and fastboot drivers
(look into sticked thread "how to flash stock rom")

- put Persist.img in same folder like your adb/fastboot installation

- reboot your phone into fastboot mode
(hit volume when phone starts, select fastboot)

- open command line in the folder where your drivers / ADB-Fastboot installation is located.

- enter command:
fastboot.exe flash persist Persist.img

- you can reboot phone by select via volume buttons(not recommended) or type command:
fastboot reboot


!!! Dont / never ever / at no time ever select "reboot to ffbm"
Dont touch that!!!!


So my suggest is to enter command:
Fastboot reboot

(avoid missclick to that ffbm mode)


_____________________________________

experiences:
persist.img of 3.1.194 is not good with AEX 5.0. Produces black screen / blue led freeze.

persist.img of 2.3.044 is good with AEX 5.0

_____________________________________

experiences by crisps:
persist.img of 3.1.194 no problem with LineageOS by cosme 20171125

 

[weimerd]

OP link added to 1.9.104 and 2.5.462 persist.img.

Added link to Twrp 3.1.0.0 where you can flash persist.img to persist partition.
With twrp newer than 3.1.0.0 the option to flash to persist partition is no longer available.

 

[weimerd]

added new file host in post #1

 

[Jb boin]

What are those containing?
Is there any benefit to upgrade the image?

 

[Oriwen]

These are containing core drivers for sensors (correct me if im wrong).
No real benefit, flash only if you screw up your phone by formatting persist partition.

 

[weimerd]

yep, use these persist partitions only if you deleted them by accident or experience problems with sensors.
Not necessary to use them if there is no problem.

 

[dimitar.petrunov]

What are those containing?
Is there any benefit to upgrade the image?

I have a problem with AEX, getting BLODs since 5.0. I've never used qpst and went straight from ZUI 2.5.462 to AEX. Tried all the basebands with no result(well I'm on the latrest 3.5.444 now for a couple hours still no BLODs). The recommended baseband doesn't allow me to unlock the phone as if UI restarts right after pattern entering and then asks me to draw it again. I wonder whether flashing 3.1 could help and aren't there newer persis images?

 

[Terminator.J]

I have a problem with AEX, getting BLODs since 5.0. I've never used qpst and went straight from ZUI 2.5.462 to AEX. Tried all the basebands with no result(well I'm on the latrest 3.5.444 now for a couple hours still no BLODs). The recommended baseband doesn't allow me to unlock the phone as if UI restarts right after pattern entering and then asks me to draw it again. I wonder whether flashing 3.1 could help and aren't there newer persis images?

So between this post and the one where you asked me about not needing to do QPST/QFIL flashes any more since there's unofficial Treble support in the AEX thread, I get the feeling you're hoping someone will tell you that there's a simple answer that doesn't involve using QFIL to flash a factory ZUI QPST package.

There isn't.

What you're realizing is that you need to update more than just /system, /boot, and /persist... there's a lot of potential partitions that could've been messed up or accidentally wiped or overwritten, depending on which recovery you've been playing with and what the many various custom ROM installer scripts tell it to do... and the best way to make sure that ALL the partitions are healthy and have current, works-well-together data in them is by using QFIL to flash a current ZUI package (3.1.194 as of this writing) then use the factory recovery to install the latest ZUI Oreo OTA. With this phone, it's not an optional step; using QFIL to go back to a standard, factory image is literally step 1 in any of the upgrade or troubleshooting guides.
It's time to make sure you have it installed, USB drivers working, a good USB 3.0 type C cable that works reliably for data transfer, 7-zip installed, and at least 2 gigs of drive space available so you can decompress ZUI 3.1.194 into a folder at the root level of your drive. This isn't a phone you can work on without a computer unless you're ready to only stay on official ZUI releases with a locked bootloader & no root so that you can't accidentally mess anything up trying to get custom ROMs to work. If you want to re-lock your bootloader in that case, be sure you download the ZUI 1.9 QPST package and start from that instead of 3.1.194.
It's not that scary, and I'm happy to answer questions in PM if you need some help.

 

[dimitar.petrunov]

So between this post and the one where you asked me about not needing to do QPST/QFIL flashes any more since there's unofficial Treble support in the AEX thread, I get the feeling you're hoping someone will tell you that there's a simple answer that doesn't involve using QFIL to flash a factory ZUI QPST package.

There isn't.

What you're realizing is that you need to update more than just /system, /boot, and /persist... there's a lot of potential partitions that could've been messed up or accidentally wiped or overwritten, depending on which recovery you've been playing with and what the many various custom ROM installer scripts tell it to do... and the best way to make sure that ALL the partitions are healthy and have current, works-well-together data in them is by using QFIL to flash a current ZUI package (3.1.194 as of this writing) then use the factory recovery to install the latest ZUI Oreo OTA. With this phone, it's not an optional step; using QFIL to go back to a standard, factory image is literally step 1 in any of the upgrade or troubleshooting guides.
It's time to make sure you have it installed, USB drivers working, a good USB 3.0 type C cable that works reliably for data transfer, 7-zip installed, and at least 2 gigs of drive space available so you can decompress ZUI 3.1.194 into a folder at the root level of your drive. This isn't a phone you can work on without a computer unless you're ready to only stay on official ZUI releases with a locked bootloader & no root so that you can't accidentally mess anything up trying to get custom ROMs to work. If you want to re-lock your bootloader in that case, be sure you download the ZUI 1.9 QPST package and start from that instead of 3.1.194.
It's not that scary, and I'm happy to answer questions in PM if you need some help.

It's been over a day without a blod now with latest baseband. I don't want to qfil anything because I'm sceptical of the outcome.

 

[Terminator.J]

It's been over a day without a blod now with latest baseband. I don't want to qfil anything because I'm sceptical of the outcome.

And that's your choice, but if you've been flashing partitions piecemeal since ZUI 2.5.x and AEX 5.0 instead of a clean QFIL flash & bring-up to eliminate potential unknown causes of instability, please don't waste time submitting bug reports or asking for help with blue LED hard crashes since there's no way to know what state your phone is in.

 

[dimitar.petrunov]

And that's your choice, but if you've been flashing partitions piecemeal since ZUI 2.5.x and AEX 5.0 instead of a clean QFIL flash & bring-up to eliminate potential unknown causes of instability, please don't waste time submitting bug reports or asking for help with blue LED hard crashes since there's no way to know what state your phone is in.

Well, I have only reflashed the firmware partition until now, which according to your own criteria makes me eligible for bug reporting. Jokes aside, here's why I believe it doesn't make sense what you recommend. It's been reported that the only way to recover from nonworking device sensors is by going back to zui 1.9 which you don't do. So your partitions have to be in a mixed state since you start from zui 3.1. Since your device works I assume you never ran into sensor problems and respectively reflashing zui 3.1 on your phone just gives you the illusion of a clean slate start( since there is nothing wrong with your phone in the first place)

Having said that, I haven't had a blod since firmware .344 which makes me think I'm right about that.

 

[Terminator.J]

I'm not trying to attack you by the way, and I still want to help make sure you've got a working QPST/QFIL setup on your computer because I do believe it'll help make sure you have the best experience going forward. But I'm also appreciating the discussion, and I hope some other folks will chime in (and we can take it elsewhere in the forums if needed - I know it's getting a little off-topic).

Well, I have only reflashed the firmware partition until now, which according to your own criteria makes me eligible for bug reporting.

You've installed custom roms. Without QFIL in-between. That touches more than just /system, /data, /boot, /dalvik-cache, or /cache. It touches /persist where your device sensor configs live, it means you're modifying NVRAM areas like /modem-st1 and /modem-st2, and now, with the Treble-compatible TWRP fstab mounting /factory as /vendor, you're modifying /factory. There's probably many more. But you're not resetting them to a known-good factory state in-between, which is the entire point of this discussion.

Jokes aside, here's why I believe it doesn't make sense what you recommend.

What everyone recommends. Go look at troubleshooting and how-to guides throughout the Z2 Pro forums here and on zukfans.eu. It's all about starting with a QFIL flash which will reset your device's partitions to a known factory state before custom ROM installation. How much time have you spent looking at the files included in a QPST package, or digging into the XML to see what they're flashing? They've got a full GPT blank partition map included; it wipes out and re-loads whatever Lenovo thinks needs to get wiped out to factory flash a phone.

It's been reported that the only way to recover from nonworking device sensors is by going back to zui 1.9 which you don't do.

It's been reported that you might be able to flash just a persist.img that corresponds to your last-flashed ZUI version to recover from non-working sensors, but it's safer to just QFIL flash the whole thing. And I literally just flashed 1.9 before 3.1 three nights ago, and re-unlocked my bootloader. So I *DO* do that.
Like I have already said, what I disagree with is the generally proposed troubleshooting/clean flashing advice of starting with 1.9 and then doing OTA updates... more steps = more points of potential failure, especially when you're transferring over the internet from servers in China. I feel like it's superstition that we're passing along because it usually works; it's true that it's a slightly more complete troubleshooting option because it also restores a locked bootloader, which all later factory QPST packages don't touch. But if I have no reason to believe that my bootloader is messed up, as I have no problem getting into & out of it or using fastboot commands, then it's also a big waste of time. My advice continues to be that if you're trying to do super-super clean or need to troubleshoot, you should QFIL flash 1.9 then QFIL flash 3.1, rather than only flashing 1.9 then downloading OTA updates and risk those being corrupted in-transit or wasting the time/download bandwidth to get and apply several updates over & over again. As far as I can tell looking at the QPST installation packages, it's just as thorough (other than bootloader), with fewer opportunities for something to go wrong.

So your partitions have to be in a mixed state since you start from zui 3.1. Since your device works I assume you never ran into sensor problems and respectively reflashing zui 3.1 on your phone just gives you the illusion of a clean slate start( since there is nothing wrong with your phone in the first place)

I didn't start from 3.1, I just understand that since it's literally blowing a new GPT partition map over the storage and filling them with the appropriate images, it's not a mixed state and it is a clean state. But since it had been a while since I last touched my bootloader, I decided to start with 1.9 before going to 3.1 before going to 3.5.316 OTA before unlocking bootloader & going to custom ROM + 3.5.344 baseband via TWRP-flashable zip.

Having said that, I haven't had a blod since firmware .344 which makes me think I'm right about that.

Good, I'm glad it's working better now, but that shouldn't make you think you're right about avoiding QPST/QFIL. The BLoD could be from the bluetooth radio freaking out, could be from someone using a poorly-configured thermal-engine.conf that has an artificially low temp limit and it thinks it's overheating, could be from using a custom kernel with aggressively low voltages for given clock steppings, could be from failure to change clock states trying to come out of deep sleep at a certain time (like alarm going off, ugh, that one's awful). It's the Z2's general "I think I have a hardware failure and I'm going to hard crash to avoid potential physical damage by trying to continue", and I'm glad you're not getting it now with the latest radio firmwares.

Again, not trying to pick on you, but I think you're doing yourself a disservice AND wasting peoples' troubleshooting efforts if you're not willing to start with a QPST/QFIL flash, and I'm hoping I'm giving a good explanation as to why.

 

[Oriwen]

Actually I suffered from non-working sensors and full wipe (or you can say total factory reset) by QFIL of ZUI 1.9 solved it. I softbricked my phone between these two states trying to solve it without QFIL btw.

 

[dimitar.petrunov]

@Terminator.J thanks for the input. Still I'm coming from the fact that If I've only flashed AEX and AEX is the culprit of my partition problems then reflashing it once again won't solve them. And AEX is the only ROM I've ever flashed on this phone. I haven't understood you correctly about ZUI 1.9, my appologies. I haven't reported BLODS in the ROM's thread only asked if anyone experiences it since I'm aware of my personal setup. Btw If I remeber correctly NYE version was BLOD free on my phone too.
@Oriwen That's exactly what I wonder how is it possible to wipe your persist partition by flashing a custom rom? Since the cure is going to zui 1.9 and then flashing the same ROM how do you not loose your persist partition again? I'm trying to understand why flashing has such side effects or is just because of flashing random partition images like the ones in this thread?

 

[Oriwen]

@Oriwen That's exactly what I wonder how is it possible to wipe your persist partition by flashing a custom rom? Since the cure is going to zui 1.9 and then flashing the same ROM how do you not loose your persist partition again? I'm trying to understand why flashing has such side effects or is just because of flashing random partition images like the ones in this thread?

I probably flashed recovery partition badly, rewritten wrong partition and boom .... thats only possible culprit for me as far as I know.

 

[Terminator.J]

@Terminator.J thanks for the input. Still I'm coming from the fact that If I've only flashed AEX and AEX is the culprit of my partition problems then reflashing it once again won't solve them. And AEX is the only ROM I've ever flashed on this phone. I haven't understood you correctly about ZUI 1.9, my appologies. I haven't reported BLODS in the ROM's thread only asked if anyone experiences it since I'm aware of my personal setup. Btw If I remeber correctly NYE version was BLOD free on my phone too.

@Oriwen That's exactly what I wonder how is it possible to wipe your persist partition by flashing a custom rom? Since the cure is going to zui 1.9 and then flashing the same ROM how do you not loose your persist partition again? I'm trying to understand why flashing has such side effects or is just because of flashing random partition images like the ones in this thread?

All an installer script (any of them - rom, gapps, magisk, supersu, whatever) has to do is touch something in /persist. And there's legitimate reasons to do that, like survival scrips for things that you want to persist across a system wipe/update (someone correct me if I'm wrong, but I know it's for more than just sensor configs), like google apps install info.
It seems like a number of folks either got too happy with wiping things in TWRP trying to clean their phone (rather than using QFIL to flash a factory QPST image, which does all the partitions!) or otherwise some custom ROM or systemless root or botched flashing attempt put garbage data into /persist. Some of the TWRP versions available, like the LR.Team ones, allow you to wipe a LOT more than just /system, /data, /cache, /dalvik-cache, /boot, and internal storage... the Chinese one will let you mount & wipe /persist, /efs, and a bunch of others you reeeeeally don't want to touch. Or maybe it just gets crusty with several months' worth of various installations (again, not just a ROM, but any installation script could actually touch it) doing different things to it and leaving ultimately incompatible data.

The cure doesn't cure /persist by wiping it, but by making sure that it only has good data in it (particularly the configs for the sensors), and that those config versions match the drivers that depend on those configs. So if you've got configs from an ancient (ZUI 1.9 = Android 6 marshmallow) version in /persist but drivers for that hardware from Oreo (taking the ZUI 3.5 blobs), it's likely that some things aren't going to behave correctly, wouldn't you agree? When someone's having trouble with their setup, QFIL of the latest full factory package (which includes fresh /persist partition images), followed by as few OTA updates as needed, is the fastest way to get good data back in all the places so you can start loading a custom recocovery & ROM from a known-good state.

Yeah, you're right; AEX 5.2 and earlier (including NYE beta and some other non-Treble custom ROMs worked okay with the ZUI nougat basebands (like the ZUI 2.5.462 you had), and they were even recommending coming from 3.1.194 because the early 3.5 DEV basebands were unstable. But in AEX 5.3 & up it REALLY needed an oreo (3.5.x) one in order to work... I was running into that same problem of constant BLOD crashes right after a QFIL flash of ZUI 3.1 and fresh TWRP 3.2.1 & AEX 5.3 install from there. Reflashing ZUI 3.1 via QFIL then updating with the 3.5.316 OTA package via factory recovery, then loading TWRP , wiping, & installing AEX 5.3 again took care of it and 5.3 has been basically solid for me in all the important ways since then (and with the latest 3.5.344 baseband update).

Again, please feel free to PM me if you'd like to compare more notes on things or are having issues... I really do want to be a resource for you & everyone here in making the most of these phones, and avoiding some big headaches. Setting up QPST/QFIL is a little headache, but it helps prevent much bigger ones in the long run.

 

[mlkj5002]

Hi mates,

here we go with the persists.img for Lenovo ZUK Z2 Pro.

So if you deleted them by accident you can try to reflash these:

new added file host for all files: https://www.androidfilehost.com/?w=files&flid=243937

persist.img ZUI 1.9.104:
https://mega.nz/#!0dxzwRrD!0DjKphWCRU-vv4yb1clTqrppVPGzbdaLEc4P7ItX6Ek

persist.img ZUI 2.3.044:
https://mega.nz/#!9QAE3J4I!wMNuXJ9430ihNKUgAmfJJqaB7a13v8qHtTGhCb-3hOE

persist.img ZUI 2.5.462:
https://mega.nz/#!MVZEnQCb!KvKYcHFdxvQEjlRC3zKsvQH316YY3iyNJEV3HE63cDU

persist.img ZUI 3.1.194:
https://mega.nz/#!oURh0ARA!JvliKwO6-bvdobG1qZoXg9CrH1u0zmtLsjFuoCIBoFk

All credits to @crisps


WARNING: these files are not tested. All use to your own risk.
Anyway if you accidentially deleted your persist partition it is worth a try

Flashable by fastboot or twrp. Note: Twrp 3.2.0.0 is not giving you the option to flash persist img. Use a previous Twrp version or flash by adb/fastboot.

TWRP 3.1.0.0 for Z2 Pro:
https://mega.nz/#!ABACiBKD!jPpLuguCoPU58Wq667D3H-YnsoyyXQ505ih0sapAOUY

Enjoy

_______________________________________

HowTo flash with fastboot:

- Download correct adb and fastboot drivers
(look into sticked thread "how to flash stock rom")

- put Persist.img in same folder like your adb/fastboot installation

- reboot your phone into fastboot mode
(hit volume when phone starts, select fastboot)

- open command line in the folder where your drivers / ADB-Fastboot installation is located.

- enter command:
fastboot.exe flash persist Persist.img

- you can reboot phone by select via volume buttons(not recommended) or type command:
fastboot reboot


!!! Dont / never ever / at no time ever select "reboot to ffbm"
Dont touch that!!!!


So my suggest is to enter command:
Fastboot reboot

(avoid missclick to that ffbm mode)


_____________________________________

experiences:
persist.img of 3.1.194 is not good with AEX 5.0. Produces black screen / blue led freeze.

persist.img of 2.3.044 is good with AEX 5.0

_____________________________________

experiences by crisps:
persist.img of 3.1.194 no problem with LineageOS by cosme 20171125

By flash Twrp:

Witch partition i select?
Boot
Recovery
Système image
Firmware

 

[crisps]

Read OP

 

[diogooskamarada]

"persist" lenovo z5

Hi everyone, I could get the file persist.img for lenovo z5. I am trying to use twrp but always the error because of the persist folder

 

[weimerd]

new flashable persist sensors zip from ZUI 4.0.233 ST online, see first post.

Enjoy mates, all for Z2 Pro only.

Tested with latest twrp and RedWolf twrp. Tested with Android 8.1 and upcoming versions.

All credits to @crisps who did all the work and let me upload it