[GUIDE] Reflash LEX727 With Stock ROM After LEX720 Update - LeEco Le Pro3 Guides, News, & Discussion

I flashed the latest 20s Chinese ROM to unlock my bootloader and had trouble getting back to LEX727 19s ROM with a working SIM card, this what I did to fix it.
Goal: Get LEX727 back to 727 ROM from any Chineese Variant (LEX720) with a working sim card.
Logic: We need to get the phone back to as stock as possible so that we can flash dr4stic's ROM That will update from CN5.8.018s to US5.8.019s. First we need to install CN5.8.018s, but we need to do it from stock recovery, to get stock recovery back we use a TWRP backup made by suhridkhan, then copy the CN5.8.018s zip, rename it to update.zip and allow the phone to do it's thing It will take quite awhile to flash the stock CN5.8.018s ROM, but when its done we can then install dr4stic's ROM, but first we need custom recovery again, since we flashed stock recovery when we used the TWRP backup. So we reflash custom recovery (I recommend GrossoShop's TWRP as that is what worked for me, however others may work). Reboot into fastboot, fastboot flash recovery the GrossoShop TWRP, then we go back to recovery. Now we can install the upgrade ROM. Once the upgrade ROM is installed, we can reboot and we'll have a completely stock version of the LEX727 ROM with Stock Recovery. (oobe state)
STEP 1 INSTALL WORKING ROM
1. You will need a working ROM to copy the TWRP unzipped files to the phone (figure this out on your own, but you should already have something that works)
STEP 2 STOCK RECOVERY
1. Restore this TWRP backup
1. Send the unzipped files to your phone in TWRP/BACKUP/<Device_ID>/TWRP. (You need a working ROM to do this with USB, you can try adb pushing the .zip and adb shell unzipping but I had permisison errors. and found it easier to just move the files unzipped)
2. Reboot into recovery, Advanced Wipe everything except Internal Storage (where your backup is)
3. Restore from the TWRP backup, before restarting, do a factory reset wipe and dalivik.
4. Reboot, and you SHOULD be in the LEX727 Rom, however your sim card will not be recognized depending on the modem firmware you came from.
STEP 3 GETTING DOWN TO CN5.8.018s
1. Since we have stock recovery, we can now use it to flash down to the right Chineese ROM version for dr4astic's ROM update to work.
2. Setup the phone, and copy LE_ZL1_LEX720_CN_5.8.018S.zip, then rename it to update.zip
3. Install the update through the phone settings or browser. (It will take quite a while 15ish minutes)
4. The phone may reboot into an endless boot loop where it just keeps redoing the same startup flash, To get past this reboot into recovery and perform a "Clear data" wipe.
5. You should now be in the stock version of LEX 720 5.8.018s
STEP 4 USING THE UPDATE ROM
1. We need to flash a custom recovery again (I recommend GrossoShop's as that is what worked for me, however others may work)
2. Reboot into fastboot and flash your recovery software
3. Wipe everything, data included and reboot back into recovery.
4. adb push the update ROM and install it, wipe dalvik and do a factory reset wipe before restarting.
5. When you tap restart system from TWRP the phone will vibrate for about 7ish seconds, dont do anything, just let it do its thing. It will reboot and go to a black screen, then finish rebooting.
(this is perhaps the most risky step as we are returning to a stock ROM with stock recovery and might loose our unlocked bootloader)
6. You should get everything back to stock ROM with working SIM card and an unlocked bootloader.
note: I will be saving local copies of all the files required indefinitely, so if any of the above links break, I will re-upload.

Post
Reserved

Links down! Plz fix. Thank you.
:crying:
Links down! .

Thanks for the information.
You seem to be using the links generated by the file hosting websites for you which expires very quickly. Please use the original links.
e.g.
CN5.8.018s (https://www.mediafire.com/folder/gntdgfr67054v/Le_Pro_3_X720)
CN5.8.018s-to-US5.8.019s.zip (https://androidfilehost.com/?fid=601275311581036717)
TWRP_x720_r4-V3_OK_FINAL (https://dev.androidfilehost.com/?fid=385035244224398544)

This is exactly what i need, however i have no idea how to do this. Sad.

Link down
Hi,
Your link to CN5.8.018s-to-US5.8.019s.zip is down. Is it possible that you provide this file again?
Thank you!

Related

[Q] About to install ARHD. Please check my process....

Hi all,
I'm looking at flashing ARHD. I've read through the instructions at least 20 times but I'm unsure of just a few things and want to be 100% before trying this as there are a heaps of people who seem to have bricked by not following instructions properly.
As I understand, the process is as follows.......
1. Download super wipe zip and place it on SD card.
2. Download rom and place on SD card.
3. Download firmware package and un-rar.
4. Download 'Official Clockworkmod Touch Recovery 5.8.3.1'
5. Disable antivirus protection on PC.
6. Ensure ADB drivers are installed correctly on PC.
7. Unlock Bootloader via HTC-dev
8. Boot phone in to bootloader and enter Fastboot Mode
9. Install "recovery-clockwork-touch-5.8.3.1-endeavoru.img" via fastboot
command in ADB console.
10. Boot in to the newly installed recovery and perform a nandroid backup.
11. Reboot phone into bootloader and enter Fastboot mode.
12. Run "install-boot-windows.bat' as administrator to install the new firmware
13. Reboot and enter recovery mode.
14. Using the newly installed recovery, flash the
"Android_Revolution_HD_Super_Wipe_One_X.zip" on the SD card.
15. While still in recovery, flash the Android Revolutipn ROM zip.
16. Reboot and enjoy.
Have I missed anything there and is this in the correct order?
At what point does the PJ46IMG.zip need to be installed? The instructions for this are unclear.
Also, in the event something goes wrong and the phone doesn't boot (but i can get into recovery mode), can I just flash the backup file? Or does the fact that I've overwritten the boot.img via Fastboot mean that I can't restore the backup without flashing a stock boot.img via fastboot first?
Thanks and sorry to be a n00b. I'm just finding the order a little mismatched moving between various threads and want to be 100% sure.
Cheers.
You'll be fine. Both Firmware 1.26 and 1.28 is OK with arhd.
On going back to your nandroided stock rom, flash your stock boot.img then restore stock nandroid.
Sent either from my Arc or One X using xda premium
Remember to flash boot.img before the rom
I got my One X yesterday, did all you did BUT, after step 11. nandroid backup, I did these: Nandroid -> Super wipe -> Flash boot.img -> Flash ARHD 3.1.0 and everything works fine
Nubzori said:
Remember to flash boot.img before the rom
I got my One X yesterday, did all you did BUT, after step 11. nandroid backup, I did these: Nandroid -> Super wipe -> Flash boot.img -> Flash ARHD 3.1.0 and everything works fine
Click to expand...
Click to collapse
Did you flash the PJ46IMG.zip firmware file?
Rycon33 said:
You'll be fine. Both Firmware 1.26 and 1.28 is OK with arhd.
Click to expand...
Click to collapse
Does that mean I don't need to flash PJ46IMG.zip?
Sentinel196 said:
Does that mean I don't need to flash PJ46IMG.zip?
Click to expand...
Click to collapse
No need for firmware files

Cannot install 4.0.2 update

I was using 4.0.0 stock with twrp and root. Tried to install the 4.0.2 update but every boot just took me back to recovery. Tried wiping clean, no change. Tried installing stock recovery v2.0, recovery would hang. Tried using new twrp 3.0.3 and I could get back in, but any ROM, stock or not I installed, would not stick.. Even twrp would warn me "no os installed. reboot anyway?" even when I had just installed a ROM. So in the end I flashed OOS 3.2.8 with twrp and then flashed stock recovery. At this point I'm pretty much at factory stock at v3.2.8 with stock recovery v1.0. Now I'm trying to update to 4.0.2 via OTA and for the 3rd time already I have received a installation failed message and rebooted to system. The first time I thought it was because I disconnected VPN after starting the download, so I downloaded a second and a third time. I don't want to resort to sideloading again because I fear I might get the same no OS installed problem I got when I tried to install 4.0.2 in the first place. Does anyone have any insight on what is wrong?
Steps:
1. Install latest Official or Modified TWRP ( 3.0.3/ 3.0.3 version 14 by eng.stk)
2. Enter into recovery. Connect phone to PC and copy downloaded ROM file.
3. Wipe everything in the recovery- Data, System, cache and Dalvic. It will erase everything.
4. Flash ROM zip after completing, don't reboot phone. Reboot to recovery again, and then reboot phone.
If u reboot phone directly after flashing ROM, u will loose TWRP.
Even twrp would warn me "no os installed. reboot anyway?" even when I had just installed a ROM.
Click to expand...
Click to collapse
This is pretty normal for nougat OOS. I've faced it for all 3 ROMs i flashed. Don't worry, your ROM was flashed successfully. You can mount and check the /system partition, you can see your ROM files there.
So here's what worked for me. (considering you are on ext4 /data)
1. Flash latest official twrp recovert ext4 version or use the file system swapper zip if it doesn't decrypt your data in recovery. TWRP has some issues as of now and mounts f2fs as default, so you just need to flash the file system swapper zip in order to swap it to ext4 by default.
2. Wipe /system /cache and dalvik cache.
3. Flash full 4.0.2 ROM zip, should be 1.4 GB in size.
4. Flash TWRP image again just in case.
5. Reboot to recovery, not to system.
6. Flash stable 2.79 Super Su and you are good to go.
Thanks for the tip, however I don't mind losing twrp, I only want to get stock unaltered update and this procedure does not help in this
IonAphis said:
Thanks for the tip, however I don't mind losing twrp, I only want to get stock unaltered update and this procedure does not help in this
Click to expand...
Click to collapse
Have you tried this guide: https://forum.xda-developers.com/oneplus-3/how-to/guide-flashing-oos-v4-0-1-custom-rom-t3537757
P.S. I think you did, but I'm just asking.
Thanks for the tip, but I fixed it. Ended up flashing v3.2.8 via twrp and installed OTA to 4.0.1 via sideload. Recovery would not boot unless first fully booted into the system. After that sideloaded 4.0.2 via OTA and now back to complete stock.
Thanks guys!

Help... can't reverse bootloader or finish install

I absolutely hate the navigation buttons and the lack of a app drawer so I jumped when I heard I could put a custom Rom on it. So I unlocked the boot loader but couldn't for the life of me get twrp on it so feeling defeated I decided not to mess with it but now the darn thing won't boot it goes to the recovery screen and not any further. So I guess I need help reversing this or completing the twrp install... I don't really care which cuz I just need a working phone. (Preferably with twrp installed so I can put a different Rom on..)
Need a working phone with stock? Extremely easy. Flashing stock has been made very easy.
Just download factory image and follow the instructions here
https://insider.razerzone.com/index.php?threads/robin-factory-images-and-usb-driver.21487/
And since you cannot boot just reach the recovery page, check if you are able to run fastboot command (fastboot devices) and then run the bat file as instructed in the guide above.
This will wipe everything and help you flash stock to your device.
Getting recovery on Robin is easy too. Not sure what went wrong for you. Make sure you have everything in place first.
Download and install Minimal adb/fastboot https://insider.razerzone.com/index...der-flash-custom-recovery-decrypt-root.23775/
Download and install Robin USB Drivers (just in case) https://insider.razerzone.com/index.php?threads/robin-factory-images-and-usb-driver.21487/
Download latest TWRP https://dl.twrp.me/ether/
Download latest factory image https://insider.razerzone.com/index.php?threads/robin-factory-images-and-usb-driver.21487/
If you want to root then get the latest version of Magisk https://forum.xda-developers.com/apps/magisk (v14 worked fine for me)
Download the custom ROM of your choice
After unlocking the bootloader, just flash the recovery file with the fastboot command and select recovery on your device, you should see TWRP in 1-2 minutes.
Watch this video till 7:34 https://www.youtube.com/watch?v=DKyEhn9clNw
Once you have flashed TWRP properly, now you can push magsik, ROM and gapps and flash them one by one to root and install custom ROM of your choice.
Hope it helps.

Updating to Android O / Nandroid Restore back to Android N?

Used the search, used google, couldn't find any concrete answers
I am on Android N - unlocked bootloader - rooted via magisk, One Plus 3.
Could I do the following?
use TWRP to make a Nandroid Backup (System+Data+Boot) of my current set-up
then, manually flash (using twrp) Android O
find out I don't particularly like it
Go back to TWRP and Nandroid Restore back to Android N, as if no update ever happened
Or will there be issues?
Thanks
I do that with freedomos. 2.17(N)>3.1(O)>2.17. I restore nandroid and reflash rom
xGOGI said:
I do that with freedomos. 2.17(N)>3.1(O)>2.17. I restore nandroid and reflash rom
Click to expand...
Click to collapse
Should have mentioned I'm using stock rom.
So I'd restore the nandroid via twrp, and I should be good to go?
arthritis said:
Used the search, used google, couldn't find any concrete answers
I am on Android N - unlocked bootloader - rooted via magisk, One Plus 3.
Could I do the following?
use TWRP to make a Nandroid Backup (System+Data+Boot) of my current set-up
then, manually flash (using twrp) Android O
find out I don't particularly like it
Go back to TWRP and Nandroid Restore back to Android N, as if no update ever happened
Or will there be issues?
Thanks
Click to expand...
Click to collapse
There won't be any issue. You are alright with the procedure. Just make sure you use the correct twrp recovery for oreo coz if you use the non compatible recovery then you won't be able to boot into recovery once the oreo is flashed and you are forced to go with the stock recovery
Process I followed when I tried oreo last week
Take nandroid of all options available except system image. (system, data, bootloader, firmware, efs, etc.) on nougat twrp.
Do factory reset(wipe everything except internal storage) then flash oreo twrp image. Perform reboot. (no OS warning on reboot option screen will appear) just ignore it. It will boot to recovery even without the OS.
Once booted back to new recovery(oreo twrp)
Flash oreo stock zip and again flash oreo twrp image and reboot to recovery(this time the device will get stuck with a black screen and white LED). Don't panic, just force reboot the device and go to recovery again to flash magisk/supersu. Reboot to OS
Enjoy oreo
To go back to nougat
Reboot to recovery.
Perform factory reset as mentioned above.
Restore everything except bootloader, cache and dalvik cache
Flash nougat twrp recovery. Reboot to system.
Happy flashing.
Edit : use blu sparks recovery for nougat backup.
maxs8007 said:
There won't be any issue. You are alright with the procedure. Just make sure you use the correct twrp recovery for oreo coz if you use the non compatible recovery then you won't be able to boot into recovery once the oreo is flashed and you are forced to go with the stock recovery
Process I followed when I tried oreo last week
Take nandroid of all options available except system image. (system, data, bootloader, firmware, efs, etc.) on nougat twrp.
Do factory reset(wipe everything except internal storage) then flash oreo twrp image. Perform reboot. (no OS warning on reboot option screen will appear) just ignore it. It will boot to recovery even without the OS.
Once booted back to new recovery(oreo twrp)
Flash oreo stock zip and again flash oreo twrp image and reboot to recovery(this time the device will get stuck with a black screen and white LED). Don't panic, just force reboot the device and go to recovery again to flash magisk/supersu. Reboot to OS
Enjoy oreo
To go back to nougat
Reboot to recovery.
Perform factory reset as mentioned above.
Restore everything except bootloader, cache and dalvik cache
Flash nougat twrp recovery. Reboot to system.
Happy flashing.
Edit : use blu sparks recovery for nougat backup.
Click to expand...
Click to collapse
Thank you for the detailed procedure.
maxs8007 said:
There won't be any issue. You are alright with the procedure. Just make sure you use the correct twrp recovery for oreo coz if you use the non compatible recovery then you won't be able to boot into recovery once the oreo is flashed and you are forced to go with the stock recovery
Process I followed when I tried oreo last week
Take nandroid of all options available except system image. (system, data, bootloader, firmware, efs, etc.) on nougat twrp.
Do factory reset(wipe everything except internal storage) then flash oreo twrp image. Perform reboot. (no OS warning on reboot option screen will appear) just ignore it. It will boot to recovery even without the OS.
Once booted back to new recovery(oreo twrp)
Flash oreo stock zip and again flash oreo twrp image and reboot to recovery(this time the device will get stuck with a black screen and white LED). Don't panic, just force reboot the device and go to recovery again to flash magisk/supersu. Reboot to OS
Enjoy oreo
To go back to nougat
Reboot to recovery.
Perform factory reset as mentioned above.
Restore everything except bootloader, cache and dalvik cache
Flash nougat twrp recovery. Reboot to system.
Happy flashing.
Edit : use blu sparks recovery for nougat backup.
Click to expand...
Click to collapse
Thank you
Hi @maxs8007
thanks for the instructions. I did all that to get back to my nougat rom (PureFusion) and all seem good and phone booted fine. But i am stuck on login screen after booted up. I tried my correct password several times but to no avail. anyway reset my password without factory resetting again?
Thanks for the advise.
sqlpro said:
Hi @maxs8007
thanks for the instructions. I did all that to get back to my nougat rom (PureFusion) and all seem good and phone booted fine. But i am stuck on login screen after booted up. I tried my correct password several times but to no avail. anyway reset my password without factory resetting again?
Thanks for the advise.
Click to expand...
Click to collapse
Go to twrp - advanced - file manager - go to root folder - data - system - and delete files with .key extension. There will be 2 files delete both and reboot.
maxs8007 said:
Go to twrp - advanced - file manager - go to root folder - data - system - and delete files with .key extension. There will be 2 files delete both and reboot.
Click to expand...
Click to collapse
Thank you very much and that worked. I am back in the system.
BTW in your original instructions I had to re flash rom after restoring twrp backup otherwise it didn't boot and stuck at rom animation.
sqlpro said:
Thank you very much and that worked. I am back in the system.
BTW in your original instructions I had to re flash rom after restoring twrp backup otherwise it didn't boot and stuck at rom animation.
Click to expand...
Click to collapse
Thanks for pointing out, I must have forgot to add it. I'll update again.
Hi @maxs8007
I ran into this issue again today! after unlocking as per instructions yesterday and am back into phone and re-set the pin and all good. But today i had to reboot the phone and same issue again , cant login on the lock screen!! i tried deleting those files again but to no avail!!
any ideas before factory reset and loose my data ? Thanks.
sqlpro said:
Hi @maxs8007
I ran into this issue again today! after unlocking as per instructions yesterday and am back into phone and re-set the pin and all good. But today i had to reboot the phone and same issue again , cant login on the lock screen!! i tried deleting those files again but to no avail!
any ideas before factory reset and loose my data ? Thanks.
Click to expand...
Click to collapse
This should not have happened, anyways delete all those files which I've highlighted in the image below. This will reset the lock settings.
Oh sorry I forgot to attach the file. Here it is.
maxs8007 said:
There won't be any issue. You are alright with the procedure. Just make sure you use the correct twrp recovery for oreo coz if you use the non compatible recovery then you won't be able to boot into recovery once the oreo is flashed and you are forced to go with the stock recovery
Process I followed when I tried oreo last week
Take nandroid of all options available except system image. (system, data, bootloader, firmware, efs, etc.) on nougat twrp.
Do factory reset(wipe everything except internal storage) then flash oreo twrp image. Perform reboot. (no OS warning on reboot option screen will appear) just ignore it. It will boot to recovery even without the OS.
Once booted back to new recovery(oreo twrp)
Flash oreo stock zip and again flash oreo twrp image and reboot to recovery(this time the device will get stuck with a black screen and white LED). Don't panic, just force reboot the device and go to recovery again to flash magisk/supersu. Reboot to OS
Enjoy oreo
To go back to nougat
Reboot to recovery.
Perform factory reset as mentioned above.
Restore everything except bootloader, cache and dalvik cache
Flash nougat twrp recovery. Reboot to system.
Happy flashing.
Edit : use blu sparks recovery for nougat backup.
Click to expand...
Click to collapse
Hi, OP here. Thanks for this guide.
Unfortunately, it did not work out for me.
Take nandroid of all options available except system image. (system, data, bootloader, firmware, efs, etc.) on nougat twrp.
Done
Do factory reset(wipe everything except internal storage)
Wiped fine although I got an error of not being able to wipe 'USB-OTG' or whatever it's called. I ignored it and moved on.
then flash oreo twrp image.
I googled oreo twrp image and got an img file with filename "TWRP-Oreo-OnePlus-3-3T". When I installed the img, it asked the options to choose Boot, System, or Recovery - so I chose System.
Then I rebooted and went back to recovery.
Flash oreo stock zip
flash oreo twrp image
Done
reboot to recovery(this time the device will get stuck with a black screen and white LED). Don't panic, just force reboot the device and go to recovery again to flash magisk/supersu.
This is where it ends. I get stuck at the OnePlus loading screen and forced reboot into twrp and flashed magisk. Once I boot up the OS, I get stuck at the OnePlus logo and that's it.
I actually re-did ALL of the steps again (in case I made a mistake) and still, the same issue. No progression.
Once I gave up on Oreo, I decided to go restore my nandroid
Reboot to recovery. Perform factory reset as mentioned above.
Wiped
Restore everything except bootloader, cache and dalvik cache
Here's the issue:
I press Restore (I uncheck both bootloader and cache, but there's no option for a specific dalvik cache- unless I'm not looking hard enough?) and I get the 255 Error.
Flash nougat twrp recovery. Reboot to system.
I tried to ignore that error and flash the twrp recovery.
Rebooted and it took me to fastboot. Regardless of I keep trying to reboot system it won't work.
I actually made two separate nandroid backups (the same 'everything except system image' as you've described) in case one of the backups was corrupted. Both backups ended up with the same error.
I got too tired of all these errors and just found a stock recovery and ROM and flashed it back. Now, all my apps and settings are gone. To be honest, I just want my phone back to where it was with Nougat.
Can anyone assist me?
@maxs8007, Like I said I did that already but nope still same issue. It wouldn't let me do matter what I did.
---------- Post added at 04:59 AM ---------- Previous post was at 04:54 AM ----------
arthritis said:
Hi, OP here. Thanks for this guide.
Unfortunately, it did not work out for me.
Take nandroid of all options available except system image. (system, data, bootloader, firmware, efs, etc.) on nougat twrp.
Done
Do factory reset(wipe everything except internal storage)
Wiped fine although I got an error of not being able to wipe 'USB-OTG' or whatever it's called. I ignored it and moved on.
then flash oreo twrp image.
I googled oreo twrp image and got an img file with filename "TWRP-Oreo-OnePlus-3-3T". When I installed the img, it asked the options to choose Boot, System, or Recovery - so I chose System.
Then I rebooted and went back to recovery.
Flash oreo stock zip
flash oreo twrp image
Done
reboot to recovery(this time the device will get stuck with a black screen and white LED). Don't panic, just force reboot the device and go to recovery again to flash magisk/supersu.
This is where it ends. I get stuck at the OnePlus loading screen and forced reboot into twrp and flashed magisk. Once I boot up the OS, I get stuck at the OnePlus logo and that's it.
I actually re-did ALL of the steps again (in case I made a mistake) and still, the same issue. No progression.
Once I gave up on Oreo, I decided to go restore my nandroid
Reboot to recovery. Perform factory reset as mentioned above.
Wiped
Restore everything except bootloader, cache and dalvik cache
Here's the issue:
I press Restore (I uncheck both bootloader and cache, but there's no option for a specific dalvik cache- unless I'm not looking hard enough?) and I get the 255 Error.
Flash nougat twrp recovery. Reboot to system.
I tried to ignore that error and flash the twrp recovery.
Rebooted and it took me to fastboot. Regardless of I keep trying to reboot system it won't work.
I actually made two separate nandroid backups (the same 'everything except system image' as you've described) in case one of the backups was corrupted. Both backups ended up with the same error.
I got too tired of all these errors and just found a stock recovery and ROM and flashed it back. Now, all my apps and settings are gone. To be honest, I just want my phone back to where it was with Nougat.
Can anyone assist me?
Click to expand...
Click to collapse
Buddy from my experience the whole thing too finicky and am thinking just factory reset and stick with stock rom. I wasted so much time already. Everytime I get different error, probably recoveries still not fully compatible with Oreo.
sqlpro said:
@maxs8007, Like I said I did that already but nope still same issue. It wouldn't let me do matter what I did.
---------- Post added at 04:59 AM ---------- Previous post was at 04:54 AM ----------
Buddy from my experience the whole thing too finicky and am thinking just factory reset and stick with stock rom. I wasted so much time already. Everytime I get different error, probably recoveries still not fully compatible with Oreo.
Click to expand...
Click to collapse
Could you please tell me what error you get on the lock screen? Could you post an image so that I can get a better idea of what's happening with your device? Also could you please confirm which files have you deleted? This time you need to delete 5 files which are related to lock screen setting and those are the only files responsible for lock settings on the device. I'm somewhat confused because I never ran into such issue while I did the oreo thing
If you have decided to flash stock then just make a backup of data partition so that you won't loose your data and you can easily restore it via twrp.
---------- Post added at 01:06 AM ---------- Previous post was at 12:42 AM ----------
arthritis said:
I googled oreo twrp image and got an img file with filename "TWRP-Oreo-OnePlus-3-3T". When I installed the img, it asked the options to choose Boot, System, or Recovery - so I chose System.
Click to expand...
Click to collapse
I read the entire post and here what I've to say. The above quoted steps is where you went wrong. The recovery needs to to be flashed as a recovery and not as system.
In your case the nougat recovery was never replaced with the oreo recovery because you flashed it as a system. This is where it went wrong. Sorry for the dalvik cache and USB - otg, I didn't mentioned about them. Those are the least important points in flashing though I should have mentioned that already
The next thing you mentioned is you went back to recovery which at that moment was nougat recovery and not oreo recovery. I'll link the modded recovery I used for oreo below
The next thing you did is you flashed oreo zip and again flashed the oreo recovery but as you flashed the recovery as system, the oreo stock rom was automatically replaced with recovery because you flashed it as system and the device didn't boot because there was no android OS to boot up
You got stuck on oneplus boot up screen. (this was going to happen because of the same flashing error at your end).
You were unable to boot back to nougat as well because of the same issue.. Never flash the recovery as system. This won't let you boot the device.
To restore your nandroid backup just follow the steps below
As you confirmed you booted to stock rom with a stock recovery.
Flash nougat twrp via fastboot
Boot back to the twrp recovery and restore the nandroid backup and you are good to go
---------- Post added at 01:18 AM ---------- Previous post was at 01:06 AM ----------
I'll make a video in my free time to help you guys with the steps that I've followed to flash oreo rom and how i came back to nougat successfully.
Hello @maxs8007
Sorry I didn't have any screen shots of the prompt and finally I was fed up with the whole process and had to switch back to oreo stock rom.
Login prompt I was referring to was standard pin required load android. Black background with only pin entry.
BTW I tried blu twrp recovery oreo version and nougat version.
What's interesting is, after several failed attempts it said I got 10 more tries before phone wiped out but after 10 attempts it started counting backwards from zero, - 1,-2 etc., finally I had to flash stock recovery via fastboot and selected forgot password option which reset my phone.
BTW I have deleted all those files from data/system I found another thread but no dice.
Thank you for trying to help us all.
@maxs8007 followed your steps. Booted to oreo, didn't felt as stable as nougat then booted back to nougat. You saved me. Thanks.
sqlpro said:
Hello @maxs8007
Sorry I didn't have any screen shots of the prompt and finally I was fed up with the whole process and had to switch back to oreo stock rom.
Login prompt I was referring to was standard pin required load android. Black background with only pin entry.
BTW I tried blu twrp recovery oreo version and nougat version.
What's interesting is, after several failed attempts it said I got 10 more tries before phone wiped out but after 10 attempts it started counting backwards from zero, - 1,-2 etc., finally I had to flash stock recovery via fastboot and selected forgot password option which reset my phone.
BTW I have deleted all those files from data/system I found another thread but no dice.
Thank you for trying to help us all.
Click to expand...
Click to collapse
I'm sorry that I was unable to help you. The thing is I never used the pin prompt to load android because I reboot too often to flash things via recovery and its too much of a hassle to enter the pin everytime the device is booted and I think it's too much to a security for a android device when there's already a lock screen present once booted to secure the device.
Please don't put the pin entry to load android next time if you flash stuff regularly. It will save you the hassle of going back to stock rom and recovery when something like this ever happens again. The files which I told you to delete in the image I posted above remove the lock screen protection completely
The login pin at the boot to load android was implemented to avoid unauthorized access to the device in case it gets stolen or lost.
maxs8007 said:
I'm sorry that I was unable to help you. The thing is I never used the pin prompt to load android because I reboot too often to flash things via recovery and its too much of a hassle to enter the pin everytime the device is booted and I think it's too much to a security for a android device when there's already a lock screen present once booted to secure the device.
Please don't put the pin entry to load android next time if you flash stuff regularly. It will save you the hassle of going back to stock rom and recovery when something like this ever happens again. The files which I told you to delete in the image I posted above remove the lock screen protection completely
The login pin at the boot to load android was implemented to avoid unauthorized access to the device in case it gets stolen or lost.
Click to expand...
Click to collapse
Frankly no clue why deleting those files didn't reset my pins and I even deleted gatekeeper files too.
Maybe these are lock screen key files and android boot prompt stored somewhere else. Not sure though.

{GUIDE} - fix for being stuck at samsung boot screen due to rollback protection

Hi all I have been tinkering away and destrying my setup left right and centre to sort this process out but if you're unable to run the latest TWRP for your note from Ian and get stuck at SAMSUNG screen on boot then this process will fix that if followed correctly. This is due to the device's roll back protection.
This process will reset everything back to current date and get everything working on the new Oneui 2.1 base
Process for getting round SAMSUNG screen issue - please read through first and get the files you need before starting. I did this on my N976B but in theory it should work for other 10-range devices, notes indeed!
UNLESS YOUR RUNNING CRUEL KERNEL OR A SPIN OFF, YOU'LL NEED VOL UP AND POWER TO ACTIVATE MAGISK ON EACH BOOT
Needed:
Stock firnware
Magisk app
Twrp image
Pc and odin also patience and a brain lol
-Return to stock by flashing AP/BL/CP&CSC in odin
-Reboot and confirm oem unlocking greyed out, install magisk app and patch twrp image from Ian, also patch your ap file.
-reboot to download, meanwhile get the magisk_patched.tar and insert TWRP renamed as recovery.img in place of the stock patched recovery (keep this one for later)
-In download mode and with auto reboot off in odin, flash BL, Magisk_patched.tar(with the TWRP from Ian in), CP & HOMECSC.
-When flashing is complete exit download mode and immediately hold power and vol up and hold until on TWRP slider screen. swipe to allow modifications, format internal storage and flash multidisabler.
-Reboot TWRP and backup your current patched stock rom. FLASH THE STOCK PATCHED RECOVERY YOU SAVED EARLIER AND THEN FLASH MULTIDISABLER (THIS IS IMPORTANT AS YOU WILL THEN BE ABLE TO INSTALL TWRP VIA THE APP WITHOUT HAVING TO REFORMAT INTERNAL)
-Reboot straight to stock recovery (reboot from TWRP and hold Vol up and power until in stock recovery) and factory reset then reboot.
-You should now boot up as normal, setup your device, in particular have TWRP app and Magisk set up and running.
-Flash the Unpatched TWRP for your device in the TWRP app - reboot TWRP and check the box to kill that annoying swipe to allow modifications and then you are good to flash whatever rom or kernel you want for your device!
Flash the stock patch recovery as boot??
orbital_71 said:
Flash the stock patch recovery as boot??
Click to expand...
Click to collapse
yes then immediately flash multidisabler before you reboot to set up
i have just helped someone through this on TG so it defo works :good::good::good:
It can also confirm this is working. Just followed this guide on my Note 10+ (N975F with CTD1) and happy flashing now.
drexxie1962 said:
It can also confirm this is working. Just followed this guide on my Note 10+ and happy flashing now.
Click to expand...
Click to collapse
Excellent, thanks for testing!!!!!!!
@askmydas
you may find this useful - follow this to get your sec date reset then follow the process spelt out in the thread of the rom you want to use as you may need a different TWRP depending on what sec date the chef of your chosen rom uses.
Hey, when I get to " FLASH THE STOCK PATCHED RECOVERY YOU SAVED EARLIER" I try to do this and it tells me I don't have enough space. Any ideas?
KiwiNote+ said:
Hey, when I get to " FLASH THE STOCK PATCHED RECOVERY YOU SAVED EARLIER" I try to do this and it tells me I don't have enough space. Any ideas?
Click to expand...
Click to collapse
I worked it out, I was trying to install "recovery.img" to boot partition, "recovery.img" needs to be installed to RECOVERY partition. Silly me. Fixed it now, but have a new issue:
After I flash unpatched twrp image through the app, now my phone will only boot into TWRP. I don't even boot with recovery button presses, but it will still boot into TWRP only. Any ideas?
I know this is an old thread, but it may be that my solution could help someone who is locked on the outside of the device (softbrick)
TD,DR: If you have softbrick and you can't boot the device at all, try flashing via Odin the BL, CP, CSC from a stock rom and the AP of another completely different stock rom.
I had an IMEI 0000 issue on my Galaxy Note 8 (SM-N950F), using Hades Rom (custom), and I needed to install the stock rom. As I was on the F(15) binary, there were only two roms (SamMobile and Stockrom.net) available for my country (Brazil) with this binary:
N950FXXUFDUD6_N950FOXMFDUD6_ZTO
stockrom.net_N950FXXUFDUG5_N950FOXMFDUG4_ZTO
And a via Frija:
SM-N950F_1_20210717024140_0wmgsx8iwf_fac
And no Combination Rom for that binary
After flashing these roms several times, I was always stuck on the “Powered by Google” screen, even doing cache wipe and factory reset through stock recovery several times. So I flashed the N950FOXMFDUD6, flashed the CF-Auto-Root and was able to boot the device. Once inside I noticed that it didn't solve the problem of IMEI 0000. I tried a few more procedures, ended up restarting to install TWRP, and the OEM is closed!!! (OEM OFF, Prenormal). I start getting the message “only official binaries are allowed to be flashed(recovery)”. I flash the stock rom, but it gets stuck on “Powered by Google” again. I tryed to install CF-Auto-Root and I get the message “only official binaries…” I can't log into the device anymore. So after four days of desperation, trying every technique possible, trying to create the Combination Rom by unzipping the AP file from the stock Rom and modifying the files inside, without success, I finally try a procedure I haven't seen anywhere else: I go to the modified Odin: Odin3_v3.14.1_3B_PatcheD, I selected the BL, CP, CSC files from the N950FOXMFDUD6 rom and the AP file from the rom SM-N950F_1_20210717024140_0wmgsx8iwf_fac
And it worked! I can boot the device

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