Please suggestions for downgrading to Android 10 - OnePlus 7 Pro Questions & Answers

Hi everyone, about two weeks ago I upgraded my OP7Pro to the OS12, that's the GM1913_11_H.30 build version.
In the forums I found some confusing info about what version is (i e. I don't know if this us a MP2 version) and how to downgrade to a better OS of this phone version (whether or not it is enough to download the firmware and just flash it through Local Install from the phone).
As the OS12 version is presenting issues about VoLTE and mobile data deactivation during the calls, I'd like to install the old 10.0.10 OS version, as it corresponds to the 10.3.7 Global/India version that looks like the most stable as many users claim..
However, I do not know how to rollback with no issues and no roots.
Please tell me the most reliable way to do that.
Many thanks!!!

chose your model phone and download it
Index of /list/Unbrick_Tools
1-unzip the file
2- turn off the phone
3- run msm tool
4- press volume up + down for 5 seconds
5- plug the cable to your phone
6- Once the msmtool has recognized your phone, press the start button.
Note : This operation will reset your data

yassine2217 said:
chose your model phone and download it
Index of /list/Unbrick_Tools
1-unzip the file
2- turn off the phone
3- run msm tool
4- press volume up + down for 5 seconds
5- plug the cable to your phone
6- Once the msmtool has recognized your phone, press the start button.
Note : This operation will reset your data
Click to expand...
Click to collapse
Many thanks for your info!!
Can I flash the OS10 version directly from OS12 with no installation of the Os11?

umby75 said:
Many thanks for your info!!
Can I flash the OS10 version directly from OS12 with no installation of the Os11?
Click to expand...
Click to collapse
yes you can juste chose the right os for your model phone if you are in europe than chose EU_GM21BA/
Index of /list/Unbrick_Tools/OnePlus_7_Pro

umby75 said:
Many thanks for your info!!
However, I discovered that my carrier doesn't support the VoLTE of my phone and I'm thinking to buy another with 5G feature and VoLTE enabled with my carrier...
Click to expand...
Click to collapse
yassine2217 said:
yes you can juste chose the right os for your model phone if you are in europe than chose EU_GM21BA/
Index of /list/Unbrick_Tools/OnePlus_7_Pro
Click to expand...
Click to collapse
Ok, thanks my friend. Elsewhere told me that there could be issues related to the Security patch level going backwards so much. What do you think? Are there real risks?

yassine2217 said:
yes you can juste chose the right os for your model phone if you are in europe than chose EU_GM21BA/
Index of /list/Unbrick_Tools/OnePlus_7_Pro
Click to expand...
Click to collapse
perhaps

Related

I need to rollback (Honor 8), HELP!

I have a seemingly stupid but still annoying problem. As many of you know Android 8 + EMUI 8 came out this summer and I have updated my Honor8. Everything works well, even better (especially with regard to the battery) apart from a problem, quite annoying. I have seen that everyone around complains about the same problem, so it is clear that both a build bug and not a local problem.
Basically ... the bluetooth link with the multimedia system of my car doesn't work as it should, while it worked well with the 7.0.
Tracknames, music infos disappears, sometimes it connects regularly, starting the music, sometimes nothing happens, sometimes the music passes from the car speakers to smartphone (!!)... in short, manage the music in the car It has become a big problem!
I tried all possible options; reset pairing, reset bluetooth, clear cache, activate the developer options to control some low-level aspects of bluetooth, and finally installed Bluetooth Auto Connect which also has several advanced options. Nothing works. In the meantime an update of 8.0 has been released (mine is the buiold 521). The update came out in September ... maybe (MAYBE) this update fixes all bluetooth issues (but i don't have any detailed info about). Until today I have not received any updates and normally I check new version regularly every day. At this point I decided to return to Nougat!
And here the adventure begins!
I CANNOT IN ANY WAY do the downgrade.
What I tried:
- through HiSuite. The "back to previous version" option appears random (rarely); normally the program tells me "the system is up to date". Once appeared I tried to run the procedure, but after the decompression it gives me an error "error updating".
- by standard Rollback procedure. Using a microSD and putting the full version of Nougate in the dload folder. The installation starts but stops almost immediately with the same "update cannot be applied" error.
At this point I am desperate. I cannot update Oreo, I can't go back to Nougat and meanwhile the bluetooth still doesn't work with my car. Remember that before Oreo, everything worked very well!
What can I do? Can you help me?
Thank you
hi / i can help u / pls say me this:
your region(Ru/Eu/Cn.......)
your model( FRD-L09/L19/L04........)
Your Build number
and which build you upgrade to emui 8
m2relax said:
hi / i can help u / pls say me this:
your region(Ru/Eu/Cn.......)
your model( FRD-L09/L19/L04........)
Your Build number
and which build you upgrade to emui 8
Click to expand...
Click to collapse
Region: EU
Model: FRD-L09
Build: 8.0.0.521 (C432)
Previous Build: don't remember. It was Nougat, and I've upgraded around the first week of September. From that day I haven't received/applied any patch, because nothing appears until now.
This morning I've tried again with HiSuite. As usual it says I'm running the latest version and it doesn't offer any downgrade option .
Thelothian said:
Region: EU
Model: FRD-L09
Build: 8.0.0.521 (C432)
Previous Build: don't remember. It was Nougat, and I've upgraded around the first week of September. From that day I haven't received/applied any patch, because nothing appears until now.
This morning I've tried again with HiSuite. As usual it says I'm running the latest version and it doesn't offer any downgrade option .
Click to expand...
Click to collapse
dont worry/ do u change region of your phone past?
m2relax said:
dont worry/ do u change region of your phone past?
Click to expand...
Click to collapse
Never. And never jailbroken or rooted...
Thelothian said:
Never. And never jailbroken or rooted...
Click to expand...
Click to collapse
ok / pls do this work step by step :
1-Get Unlock Code for your Phone
2-Unlock your phone with Unlock Code
3-install TWRP recovery
4-after install TWRP notice me to send a file for u ( u must flash it from recovery TWRP )
5-after flashing u most install recovery stock
6-End and your problem is done! :fingers-crossed:
m2relax said:
ok / pls do this work step by step :
1-Get Unlock Code for your Phone
2-Unlock your phone with Unlock Code
3-install TWRP recovery
4-after install TWRP notice me to send a file for u ( u must flash it from recovery TWRP )
5-after flashing u most install recovery stock
6-End and your problem is done! :fingers-crossed:
Click to expand...
Click to collapse
I Heard TWRP doesn't work well on Oreo...
CurlyApple said:
I Heard TWRP doesn't work well on Oreo...
Click to expand...
Click to collapse
no if you use multi tools 8 for install twrp its work perfectly on oero
m2relax said:
no if you use multi tools 8 for install twrp its work perfectly on oero
Click to expand...
Click to collapse
The more you know...
Finally I've decide to try updating to 8.0.0.562. After a month of tries, fails (damn Huawei and his stupid update system), errors and a lot of other stupid things, I was finally able to update my Honor hoping the latest version will fix all the problems. It was a enormous waste of time (searching around internet)... but in the end I found a method described here: https://forum.xda-developers.com/huawei-p20-pro/help/p20-pro-bricked-t3868085#4And if you go ahead you should find the correct firmware link (on a Russian site). Although, IMHO, failing with the classic method was due to the impossibility or some bugs in the update system, to unpack the update files on sdcard. So the solution seems to be to leave both the zip and the unpacked folder.The problems with bluetooth remain, but I hope that now there is not to be crazy applying next updates. ATTENTION: the method above is NOT valid for rollback! If you try, you'll brick your Honor.
And finally I've taken an important decision... for me this is the last Huawei/honor device. Next time I'll go to another brand, with a serious update system.
Hello,
I have the same problem whit my honor, bluetooth lost signal random times, and my battery is faster get low, on android 7 i dont feel thees problems. Anyone have an idea how can i downgrade to nougat or marshmallow? My phone infos:
-FRD-L09 8.0.0.521(C432), I bought it in Hungary (i think its an EU modell), the phone have an unlocked bootloader, and flashed whit TWRP recovery
Who know the solution, pls reply here or, write me an email. Big thanks
scseke said:
Hello,
I have the same problem whit my honor, bluetooth lost signal random times, and my battery is faster get low, on android 7 i dont feel thees problems. Anyone have an idea how can i downgrade to nougat or marshmallow? My phone infos:
-FRD-L09 8.0.0.521(C432), I bought it in Hungary (i think its an EU modell), the phone have an unlocked bootloader, and flashed whit TWRP recovery
Who know the solution, pls reply here or, write me an email. Big thanks
Click to expand...
Click to collapse
flash this file with twrp and install stock recovery and do reset factor / finally use hisuite to rollback

[OP7][OOS 10.3.8 GM57AA & .0.10GM57BA] Unbrick tool to restore your device to OxygenOS

Disclaimer: By attempting any of the processes listed in this thread you accept full responsibility for your actions. I will not be held responsible if your device stops working, catches fire, or turns into a hipster and claims to have been modified before it was cool.
Hi everyone, similar to the previous threads for
OP3, OP3T, OP5, OP5T and OP6 and OP6T, here are the EDL packages (also known as MSM tool or unbrick tool) that can revive a bricked OnePlus 7.
They can also be used to rollback your phone to a previous release of OOS.
You can download the following versions:
GM57AA tools (International firmware):
ANDROID 9:
9.5.6
9.5.7
9.5.8
ANDROID 10:
10.0.1
10.0.2
10.0.3
10.3.0
10.3.1
10.3.2
10.3.5
10.3.6
10.3.7
10.3.8
Mirror for first and last MSMs per Android version: https://onepluscommunityserver.com/
GM57BA tools (European firmware):
ANDROID 9:
9.5.6
9.5.7
9.5.8
ANDROID 10:
10.0.2
10.0.3
10.0.4
10.0.5
10.0.7
10.0.8
10.0.9
10.0.10
Mirror for first and last MSMs per Android version: https://onepluscommunityserver.com/
It supports GM1900, GM1901, GM1903 and GM1905 models.
You can upgrade to newer versions of OOS using files linked in thread https://forum.xda-developers.com/oneplus-7/how-to/oneplus-7-repo-oxygen-os-builds-t3937152 originally made by @SkandaH
Instructions:
Power your device off
Maintain volume up and volume down keys to get into Qualcomm EDL mode.
Launch MsmDownloadTool V4.0.exe.
Click on Enum to be sure your device is detected and press Start.
Wait ~300 seconds
Enjoy your brand new device
FAQ:
My device isn't detected when I click on "Enum" button
Go to device manager and make sure your phone shows up as QDLOADER 9008.
If it shows up as QHUSB_BULK, it means Qualcomm driver wasn't installed automatically by Windows Update. Download the latest one from Microsoft website at http://download.windowsupdate.com/c..._fba473728483260906ba044af3c063e309e6259d.cab (source https://www.catalog.update.microsof...updateid=8ee52ba0-bdef-4009-88cf-335a678dd67a ) and install it manually by right clicking on QHUSB_BULK and selecting "Update driver software" and "Browse my computer for driver software" to where you downloaded CAB file.
My device doesn't stay in EDL mode for more than 10 seconds
Some units can have this problem and there isn't a lot of things to do to fix that, except being fast after plugging your phone to your computer.
EDIT 7th August 2019: There is apparently a "one-off" solution to this problem available at https://forum.xda-developers.com/showpost.php?p=80021106&postcount=21 . I would like to investigate more on that but sadly don't own the device so can't confirm it.
MSM tool is stuck on "Param pre-processing"
Ensure you're using the Qualcomm drivers linked in first part of this FAQ.
What is SMT Download mode?
Just don't try to unlock that mode, it will wipe your IMEI and your Widevine certificate if you use it.
Credits:
@SkandaH for inspiration in writing
@headsh0t95 for suggesting me to request an access to upload files on AndroidFileHost a few months ago for my previous threads
@AndroidFileHost for the hosting
OnePlus for the device and OS
Reserved
Reserved
Credits:
@SkandaH for inspiration in writing
@headsh0t95 for suggesting me to request an access to upload files on AndroidFileHost a few months ago for my previous threads
@AndroidFileHost for the hosting
Votton for providing a server as an alternative mirror
OnePlus for the device and OS
THIS IS AMAZING! Thank you so much. Worked like charm. No need for installing extra drivers under Windows 10 or going through some other script madness. Really smooth and easy. Thanks!
Just got my OP7 yesterday and accidentally bricked it by formatting the vendor partition in TWRP. So I was searching for an Unbrick tool but there was none.
Thank god that you uploaded this just last night and saved my OP7 from an early death
In order to get the EU firmware back I simply have to flash the OxygenOS for my region and that's it, right? - Worked via TWRP
Another question though: I can create files on data when I am on the phone and I can also copy files over via USB-OTG. However when I try to push files via adb it tells me that the partition is read-only. Any idea how to fix this?
Cool it's also almost the latest version. I think I can close the other thread now.
devnerd said:
THIS IS AMAZING! Thank you so much. Worked like charm. No need for installing extra drivers under Windows 10 or going through some other script madness. Really smooth and easy. Thanks!
Just got my OP7 yesterday and accidentally bricked it by formatting the vendor partition in TWRP. So I was searching for an Unbrick tool but there was none.
Thank god that you uploaded this just last night and saved my OP7 from an early death
In order to get the EU firmware back I simply have to flash the OxygenOS for my region and that's it, right? - Worked via TWRP
Another question though: I can create files on data when I am on the phone and I can also copy files over via USB-OTG. However when I try to push files via adb it tells me that the partition is read-only. Any idea how to fix this?
Click to expand...
Click to collapse
Hi, I sadly have no idea about how to fix the adb push thing
Thanks for the response thiugh. I fixed it yesterdy evening.
First I tried to update the system to the EU version via local upgrade but it didn't let me as I was already on a "newer" version. So it interestingly classifies the Global version newer as the EU version for somehow.
So I went for TWRP and flashed the EU version to both slots (not even sure if that was necessary). After a reboot I was back on the EU version and also the adb push worked again. So not sure what was done to the data partition during the update, but it just worked
Some_Random_Username said:
FAQ:
My device isn't detected when I click on "Enum" button
Go to device manager and make sure your phone shows up as QDLOADER 9008.
If it shows up as QHUSB_BULK, it means Qualcomm driver wasn't installed automatically by Windows Update. Download the latest one from Microsoft website at https://www.catalog.update.microsof...updateid=8ee52ba0-bdef-4009-88cf-335a678dd67a and install it manually by right clicking on QHUSB_BULK and selecting "Update driver software" and "Browse my computer for driver software" to where you downloaded CAB file.
My device doesn't stay in EDL mode for more than 10 seconds
Some units can have this problem and there isn't a lot of things to do to fix that, except being fast after plugging your phone to your computer.
MSM tool is stuck on "Param pre-processing"
Ensure you're using the Qualcomm drivers linked in first part of this FAQ.
What is SMT Download mode?
Just don't try to unlock that mode, it will wipe your IMEI and your Widevine certificate if you use it.
Click to expand...
Click to collapse
Hello friends, automatic restart solution after 10 seconds when connecting EDL mode to use MsmDownloadTool:
https://forum.xda-developers.com/showpost.php?p=80021106&postcount=21
tURkOsANsE said:
Hello friends, automatic restart solution after 10 seconds when connecting EDL mode to use MsmDownloadTool:
https://forum.xda-developers.com/showpost.php?p=80021106&postcount=21
Click to expand...
Click to collapse
Updated FAQ to include it, thanks for pointing it out
Added OOS 9.5.8 GM57AA unbrick tool
So how i understand this make my device how "of box"?
Where security? If i lost my phone 14yo boy can make MY device HIS...
WTF OP...
3a6ygb said:
So how i understand this make my device how "of box"?
Where security? If i lost my phone 14yo boy can make MY device HIS...
WTF OP...
Click to expand...
Click to collapse
Lol. Security means your data isn't visible for 14yo boy because of encryption blabla. Nobody said it's security if he is able to steal your phone and format the storage with your personal data.
Kollachi said:
Lol. Security means your data isn't visible for 14yo boy because of encryption blabla. Nobody said it's security if he is able to steal your phone and format the storage with your personal data.
Click to expand...
Click to collapse
Thx
Ok. But it really make full format all phone?
If i use this msm rom i have clear device without user data, without frp etc?
3a6ygb said:
Thx
Ok. But it really make full format all phone?
If i use this msm rom i have clear device without user data, without frp etc?
Click to expand...
Click to collapse
Yes, it wipes everything off your device and make it like the first day of unboxing. But you can do the same by going into android settings and make a factory reset.
I need msm download tool for latest oxygen os 10.0.1 ,is anyone is here who give me the link of it for oneplus 7?
Prinçe çharming ap said:
I need msm download tool for latest oxygen os 10.0.1 ,is anyone is here who give me the link of it for oneplus 7?
Click to expand...
Click to collapse
For OOS 10.0.1 there is no version. Use the latest 9.5.8 to get back on pie then update to stable 10.0.1 or stay on pie :good:
Sent from my OnePlus7 using XDA Labs
GraveDigger176 said:
For OOS 10.0.1 there is no version. Use the latest 9.5.8 to get back on pie then update to stable 10.0.1 or stay on pie :good:
Click to expand...
Click to collapse
I already have that version of msm tool but i want it for android 10.
Prinçe çharming ap said:
I already have that version of msm tool but i want it for android 10.
Click to expand...
Click to collapse
There is no version for Android 10 as far as I know
Sent from my OnePlus7 using XDA Labs
GraveDigger176 said:
There is no version for Android 10 as far as I know
Click to expand...
Click to collapse
Do u know how to extract .ops file of msm tool?

How to install android 10 on A205U

This is a how to guide on installing android 10 on all A205U phones using Xfinity mobile firmware .
Here is a link for the firmware .
https://samfrew.com/download/Galaxy__A20__/uqn2/CHA/A205USQU5BTE6/A205UOYN5BTE6/
You can also find this firmware on sammobile wed site an others .
An a big thanks to (wswjw) for his post an link that got this all started !
Ok in Odin flash AP BL CP an CSC file only don't use Home or user data files !
First enable USB Debugging in development settings .
Ok step 1 extract file from downloaded zip file place them in Odin folder all four files .
Step 2 start Odin on your PC .
Step 3 turn off phone then press volume up an down plus power button all at the same time to get phone into download mode .
Step4 Connect phone to PC with USB cable .
Step 5 in Odin click on AP slot files will pop up click on AP file an then do the same for each slot then press start .
Good luck everyone .
Great work
Im doing it now it went into recovery, bootloader and said android 10 ! I reboot system its optimizing apps. Will the root guides for this work now A205U Boost ?
A205U Boost mobile
Tigerevo said:
Im doing it now it went into recovery, bootloader and said android 10 ! I reboot system its optimizing apps. Will the root guides for this work now A205U Boost ?
Click to expand...
Click to collapse
Sorry we still don't have OEM unlock or a Root method for this model . This was to get android 10 on our phones when our carrier's haven't released it yet using the Xfinity mobile's update .
Well thank you sir . My mom just bought this phone and she customized it. I said don't because figured it would erase . Well after your instructions on it she now has Android 10 and all her settings were still there ! I wish we could do something like that with the J7 perx which I'm using now the twrp went to 3.4 , getting other J7 roms. Well back to the A205U, I was little discouraged because you could enter MSL or a generic MSL number on android 8 and 9 and activate native tether. With 10 I couldn't, well it did though let me create my own apn and save it so native hotspot working still ! Thank you Peter !
Looks as if most North American carriers have updated to Q/10 now
https://samfrew.com/model/SM-A205U/
wswjw said:
Looks as if most North American carriers have updated to Q/10 now
https://samfrew.com/model/SM-A205U/
Click to expand...
Click to collapse
Lmao all except Metro and T-Mobile
Boost mobile A205U
wswjw said:
Looks as if most North American carriers have updated to Q/10 now
https://samfrew.com/model/SM-A205U/
Click to expand...
Click to collapse
Just wanted to say thank you ! I'm back on the right build number for my phone .
peter couniaz said:
Just wanted to say thank you ! I'm back on the right build number for my phone .
Click to expand...
Click to collapse
Isn't TMB T-Mobile? So is TMK Metro? Want to flash the correct version for my phone too. We received a security patch mid June for Pie. Flashed the Xfinity Q thinking we wouldn't see Q for a few months.
peter couniaz said:
Just wanted to say thank you ! I'm back on the right build number for my phone .
Click to expand...
Click to collapse
No problem, enjoy. All except Q's battery drain effect on this phone now, lol
---------- Post added at 03:21 AM ---------- Previous post was at 03:17 AM ----------
cornaljoe said:
Isn't TMB T-Mobile? So is TMK Metro? Want to flash the correct version for my phone too. We received a security patch mid June for Pie. Flashed the Xfinity Q thinking we wouldn't see Q for a few months.
Click to expand...
Click to collapse
Yes, CSC TMK is Metro. And you can flash all 5 firmware files this time to get your carrier branded implementations. As well as HOME_CSC if you don't want to lose current data.
wswjw said:
No problem, enjoy. All except Q's battery drain effect on this phone now, lol
---------- Post added at 03:21 AM ---------- Previous post was at 03:17 AM ----------
Yes, CSC TMK is Metro. And you can flash all 5 firmware files this time to get your carrier branded implementations. As well as HOME_CSC if you don't want to lose current data.
Click to expand...
Click to collapse
I don't see where to put the home file. Only slots for AP, BL, CP, CSC, and USERDATA. Do I put HOME_CSC on CSC slot?
Edit: Nvm I got it thanks!
peter couniaz said:
This is a how to guide on installing android 10 on all A205U phones using Xfinity mobile firmware .
Here is a link for the firmware .
https://samfrew.com/download/Galaxy__A20__/uqn2/CHA/A205USQU5BTE6/A205UOYN5BTE6/
You can also find this firmware on sammobile wed site an others .
An a big thanks to (wswjw) for his post an link that got this all started !
Ok in Odin flash AP BL CP an CSC file only don't use Home or user data files !
First enable USB Debugging in development settings .
Ok step 1 extract file from downloaded zip file place them in Odin folder all four files .
Step 2 start Odin on your PC .
Step 3 turn off phone then press volume up an down plus power button all at the same time to get phone into download mode .
Step4 Connect phone to PC with USB cable .
Step 5 in Odin click on AP slot files will pop up click on AP file an then do the same for each slot then press start .
Good luck everyone .
Click to expand...
Click to collapse
I'm want to go in the opposite direction. Want to downgrade to Adr. 9 (pie) for a couple of reasons. Anyways, it's been determined(?) the B/ler is locked (Galaxy SM-A205U). Do you have any methods, advice on how I may go about achieving a B/ler unlock and/or downgrade?
69Rixter said:
I'm want to go in the opposite direction. Want to downgrade to Adr. 9 (pie) for a couple of reasons. Anyways, it's been determined(?) the B/ler is locked (Galaxy SM-A205U). Do you have any methods, advice on how I may go about achieving a B/ler unlock and/or downgrade?
Click to expand...
Click to collapse
If the bootloader has been updated... it's a trap.
Pie is a better OS; supports trusted overlay apps, more functionality for 3rd party apps and no scope storage.
Unless you do something stupid security isn't an issue with Pie.
blackhawk said:
If the bootloader has been updated... it's a trap.
Pie is a better OS; supports trusted overlay apps, more functionality for 3rd party apps and no scope storage.
Unless you do something stupid security isn't an issue with Pie.
Click to expand...
Click to collapse
RE: blackhawk
Thanx for the info. Perhaps you can give me an answer to another question. One of the reasons I want to revert to pie is that I could get local (not i-net) FM radio. This phone has the chipset and I had local FM until the And. 10 "upgrade"(was it?). Right now, I'm hesitant to attempt the downgrade because all the talk of the B/ler being locked. Once I figure that out, then I'm sure I'll do the downgrade. I have an idea how to defeat the locked B/ler, but I need some more info before I try it. Stay Sharp!
69Rixter said:
RE: blackhawk
Thanx for the info. Perhaps you can give me an answer to another question. One of the reasons I want to revert to pie is that I could get local (not i-net) FM radio. This phone has the chipset and I had local FM until the And. 10 "upgrade"(was it?). Right now, I'm hesitant to attempt the downgrade because all the talk of the B/ler being locked. Once I figure that out, then I'm sure I'll do the downgrade. I have an idea how to defeat the locked B/ler, but I need some more info before I try it. Stay Sharp!
Click to expand...
Click to collapse
Maybe a different stock rom Android 10 would support the FM radio? I never had that feature so I know nothing about it.
It's now completely missing? Maybe you need an app to access it that's missing rather than the firmware not supporting that hardware.
Look in Developer options and in Settings where it use to appear.
Try some Google searches.

Question about upgrading to android 7 from android 6

hi i have a sm g610y and have a few question regarding updating
how do i upgrade from android 6 to android 7. and if i did upgrade is it possible and safe to downgrade.
what things do i lose out if i upgrade from 6 to 7?
anthony001 said:
hi i have a sm g610y and have a few question regarding updating
how do i upgrade from android 6 to android 7. and if i did upgrade is it possible and safe to downgrade.
what things do i lose out if i upgrade from 6 to 7?
Click to expand...
Click to collapse
Since the j7 prime never recieved any bootloader upgrades it is possible to downgrade. I would suggest upgrading to oreo however,or maybe installing android 10 custom roms. anyway, to install stock 7/8 go to this link and enter your device model and country and download the latest stock firmware for you. then download odin . once you have both downloaded, unzip both of them, and open up odin. When you get you should see ap, bl, cp,csc . press the 4 buttons mentioned before and go to where you extracted the stock firmware, and you can select the appropriate file. Then boot your device to download mode by holding volume down, power and home button at the same time for 5-10 seconds. press continue. Then connect your phone to your pc, and press start in odin.
santhosh ravi said:
Since the j7 prime never recieved any bootloader upgrades it is possible to downgrade. I would suggest upgrading to oreo however,or maybe installing android 10 custom roms. anyway, to install stock 7/8 go to this link and enter your device model and country and download the latest stock firmware for you. then download odin . once you have both downloaded, unzip both of them, and open up odin. When you get you should see ap, bl, cp,csc . press the 4 buttons mentioned before and go to where you extracted the stock firmware, and you can select the appropriate file. Then boot your device to download mode by holding volume down, power and home button at the same time for 5-10 seconds. press continue. Then connect your phone to your pc, and press start in odin.
Click to expand...
Click to collapse
why oreo? and whats the difference between a normal android 10 and a custom android 10? do i need to root to install custom android 10? also if i upgrade will my files be deleted? how much disk space is needed?
anthony001 said:
why oreo? and whats the difference between a normal android 10 and a custom android 10? do i need to root to install custom android 10? also if i upgrade will my files be deleted? how much disk space is needed?
Click to expand...
Click to collapse
oreo is the latest official firmware recieved by this phone. There is no official android 10 rom for this phone. Yes you will likely lose all your data.
santhosh ravi said:
oreo is the latest official firmware recieved by this phone. There is no official android 10 rom for this phone. Yes you will likely lose all your data.
Click to expand...
Click to collapse
if lets say i successfully flashed 8.1.0 using the above instruction how do i go back to 6.0.1?
i searched my firmware on samfw and the only available fw for my model and country is 6.0.1. if i flash other countrys fw with same exact model will it work or will it not work? the only available firmware is 7.0.0
bump anyone?
anthony001 said:
bump anyone?
Click to expand...
Click to collapse
You can flash firmware of any county, since is for the exact same model you have (ex: SM-G610) there's no problem. But keep in mind some have bootlogo/apps from operator, and/or extra functionality s/bloatwares.

Development [ROM] [OFFICIAL] [ TB-J716F_CN_OPEN_USER_Q00209.3_R_ZUI_12.6.211_ST_210730_qpst]

This ROM is for TB-716F, the Chinese version (not Global).
for @mardon85 @trojaner_80 @sakun-ice and all friends in this section.
Since lolinet uploaded the same package, mine from onedrive is deleted (to save some storage).
lolinet mirrors - firmware, software, iso etc.
lolinet mirrors - powered by h5ai
mirrors.lolinet.com
BTW, I'm using TB-606F, and I'm living in China. So if you want any Chinese version ROM, pls let me know.
Other roms, I mean the Global ones, you can get them from lolinet.
asukav said:
This ROM is for TB-716F, the Chinese version (not Global).
for @mardon85 @trojaner_80 @sakun-ice and all friends in this section.
TB-J716F_CN_OPEN_USER_Q00209.3_R_ZUI_12.6.211_ST_210730_qpst.zip
Compressed (zipped) Folder
1drv.ms
Pls get me noticed if the link is invalid.
BTW, I'm using TB-606F, and I'm living in China. So if you want any Chinese version ROM, pls let me know.
Click to expand...
Click to collapse
You are amazing! This rom is flasheable with qualcomm program right?
sakun-ice said:
You are amazing! This rom is flasheable with qualcomm program right?
Click to expand...
Click to collapse
If you are talking about QFIL, then yes. Just pay attention to the steps (copied from another post) :
turn tablet off, disconnect to PC, open Qfil, press down the "volume +" buttom (do not release) and connect to pc (release till Qfil shows "Qualcomm HS-USB QDLoader 9008(comx)").
A. Qfil-Configuration-FireHoseConfiguration:
1. device type: ufs
2. Reset After Download: check
B. the main window:
load content: the contents.xml file
then press download content and wait till it boots.
I tried to flash this rom step by step according to your instructions. Unfortunately I get the following error message: Sahara protocol failed
rgeon said:
I tried to flash this rom step by step according to your instructions. Unfortunately I get the following error message: Sahara protocol failed
Click to expand...
Click to collapse
I'm sorry for this but I checked through Google, it's said some reasons could cause this error.
I think the ones below should be one of the causes:
1. QFIL version is old. I'm using 2.0.2.3, but there's newer versions.
2. USB cable should be the original one from the box not a random one.
3. when QFIL settings are all ready, press vol+ then connect to PC (do not connect to pc too early), then confirm QFIL shows "Qualcomm HS-USB QDLoader 9008(comx)". And please keep USB connecting to PC till your pad boot to normal.
4. before flashing, pls make sure the qualcomm driver is correctly installed (in case of the windows driver signature check restriction).
Hope everything be fine. Good luck!
Hi Guys, this video fixed my problem:
Now i have flashed stock rom
asukav said:
This ROM is for TB-716F, the Chinese version (not Global).
for @mardon85 @trojaner_80 @sakun-ice and all friends in this section.
TB-J716F_CN_OPEN_USER_Q00209.3_R_ZUI_12.6.211_ST_210730_qpst.zip
Compressed (zipped) Folder
1drv.ms
Pls get me noticed if the link is invalid.
BTW, I'm using TB-606F, and I'm living in China. So if you want any Chinese version ROM, pls let me know.
Other roms, I mean the Global ones, you can get them from lolinet.
Click to expand...
Click to collapse
@asuka: 1000 Thanks to you! You are the best!!
I will try to flash the stock ROM tomorrow.
rgeon said:
Hi Guys, this video fixed my problem:
Now i have flashed stock rom
Click to expand...
Click to collapse
I received the same error message: Download Fail:Sahara Fail:QSaharaServer Failrocess fail
My Qfil-Configuration-FireHoseConfiguration:
device type: ufs
Reset After Download: check
Which elf-file have you selected in field programmer? prog_firehose_ddr.elf or prog_firehose_lite.elf
Have you selected the contents.xml file in the field flash build?
I think I destroyed my Tablet today . I selcted the file rawprogram_unsparse0.xml. the Download Succeed and afterwards the Tablet shows the Lenovo Logo after start for mor than 10 minutes. It seems the chineses ROM has not been installed and the previous ROM has been deleted. Now I can access only bootload and adb shows
my Tablet in List of devices as unauthorized. Also a boot in EDL mode by pressing Volume + and Power is not possible anymore. I would be really thankful, if anybody has an advice for me, what I can do now.
Hello. Now I was able to flash the chinese Rom on my Tablet, but WLAN does not work. I´m not able to activate WLAN. Does anybody else has the same problem?
trojaner_80 said:
Hello. Now I was able to flash the chinese Rom on my Tablet, but WLAN does not work. I´m not able to activate WLAN. Does anybody else has the same problem?
Click to expand...
Click to collapse
I read something about that. They have to change the region of the tablet to Hong Kong.
How have you recovered the rom?
trojaner_80 said:
Hello. Now I was able to flash the chinese Rom on my Tablet, but WLAN does not work. I´m not able to activate WLAN. Does anybody else has the same problem?
Click to expand...
Click to collapse
I had this issue its the wireless band of your router. I had to set my router to Hong Kong band to get on the 5ghz band.
I was able to install this rom, but now I have an issue with the OTA. Was anyone able to apply the update 12.6.238 ST 8.27MB? Mine keeps me prompting to re-install the same version after reboot. I've tried many times.
By the way, I had hope I would get widevine L1 after installing the rom 210730, but that didn't happen .
Was anyone able to get widevine L1 after flashing this ROM?
Great work sir,
Does it have any other language or just only English and China?
fabricioss1980 said:
Was anyone able to get widevine L1 after flashing this ROM?
Click to expand...
Click to collapse
Firstly, you have to factory reset the CN rom you just installed, otherwise your device will get bricked. Then you relock the bootloader with fastboot command "fastboot flashing lock". You will get widevine L1 back.
Is there an opportunity to unbrick the Tablet?
@asukav
hello sir.
Do you have cn 12.6.084 rom? Or zui12.5 or higher (android 11) the most recent cn rom..
i need lastest cn rom..
Is it possible to get the rom?
asukav said:
This ROM is for TB-716F, the Chinese version (not Global).
for @mardon85 @trojaner_80 @sakun-ice and all friends in this section.
TB-J716F_CN_OPEN_USER_Q00209.3_R_ZUI_12.6.211_ST_210730_qpst.zip
Compressed (zipped) Folder
1drv.ms
Pls get me noticed if the link is invalid.
BTW, I'm using TB-606F, and I'm living in China. So if you want any Chinese version ROM, pls let me know.
Other roms, I mean the Global ones, you can get them from lolinet.
Click to expand...
Click to collapse
can i get the latest version of chinese rom of Tb-606f?
Sorry guys. Thiese roms are what I can find in chinese forums.
Since they can be upgraded (Mine is 606, and OTAs are all right, so I guess other models can be) through OTA, it seems no need to get the latest.
But if there appears any, I'll upload them.
It's National Day Holiday, 7 days starting from Oct. 1. I won't be online for long.
And I'm still trying to figure out how to flash the latest Global on 606 CN Ver.
The hardware incompatible error sucks. F you, Lenovo.

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