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[HELP] Stuck on Recovery Bootloop after OTA Update (CM14.1) , can't access Fastboot

Hi,
Just for you to know:
Model: r7plusf
Recovery: TWRP 3.0.2-0
----------------------------------------
So earlier today I did an OTA update (cm-14.1-20161205-NIGHTLY-r7plus.zip), but couldn't get my phone to boot.
So naturally, I tried wiping Cache and ART cache, but was still bootlooping.
Thought there might be someting wrong with my ROM and data, so I formated data and Installed ROM and GAPPS again after ADB pushing them onto my phone.
Now, and although CM14.1 and GAPPS are successfully installed on my Oppo R7 Plus, I can't boot into the OS. Every time I try reboot system, whether through POWER_BUTTON, RECOVERY or ADB, I just boot into Recovery.
Worst of all, for some unknown reason, I can't get into BOOTLOADER, neither through button combination, nor through Recovery nor ADB.
I found this article (http://forum.xda-developers.com/tmobile-lg-g3/general/fix-recovery-loop-twrp-computer-t2873386) in the LG G3 thread about executing some shell commands, but I haven't tested testing it with my phone's variables because it might hard brick it...
Please Help!
[EDIT] I now have access to fastboot but still recovery looping like crazy.

I installed the same update via CyanDelta , worked like a charm ! hopefully you get back up and running.

[UPDATE] strangely I tried to flash stock recovery and boot CM13 and it worked!
Will try to flash twrp again and insall CM14
keep you up to date

Same thing happened to me! Where did you get a copy of the stock recovery? Link?

resverse said:
[UPDATE] strangely I tried to flash stock recovery and boot CM13 and it worked!
Will try to flash twrp again and insall CM14
keep you up to date
Click to expand...
Click to collapse
I had the same problem. Can't remember exactly how I resolved it. But I think, I use CM recovery to flash nightly. Then flash TWRP to flash gapps. For some strange reason, using CM recovery also show no enough disk space whenever I try to flash opengapps. But TWRP recovery can flash opengapps successfully.
Don't use the OTA, use adb sideload to flash the nightly next time. So far, adb sideload has not given me any issue to flash nightly.

Same problem...
I tried a lot of things nothing works and now I've installed the cm recovery but I have the "unauthorized phone" in terminal when I try to flash the ROM... I can do nothing because I can't enable the usb debugging. I don't know what to do.
If somebody can help I appreciate.

corbalan12 said:
Same problem...
I tried a lot of things nothing works and now I've installed the cm recovery but I have the "unauthorized phone" in terminal when I try to flash the ROM... I can do nothing because I can't enable the usb debugging. I don't know what to do.
If somebody can help I appreciate.
Click to expand...
Click to collapse
Since then I found how to fix it :
first of all I flashed cm13 through TWRP,
Then I flashed the stock recovery (Google it, I found it in OPPO forums) with fastboot,
After that I did a factory reset in the stock recovery,
Booted cm13 with stock recovery,
Then re-flashed TWRP,
From TWRP, I wiped both data and system partitions,
Then fresh installed cm14 and Gapps
And it worked!
Not sure if those are the exact steps I followed because all I did was a hole lot of messing around and trying absurd things out, but think this is how I fixed it.
Let me know if it worked for you or if you still can't fix your problem
Best of luck
Resverse

resverse said:
Since then I found how to fix it :
first of all I flashed cm13 through TWRP,
Then I flashed the stock recovery (Google it, I found it in OPPO forums) with fastboot,
After that I did a factory reset in the stock recovery,
Booted cm13 with stock recovery,
Then re-flashed TWRP,
From TWRP, I wiped both data and system partitions,
Then fresh installed cm14 and Gapps
And it worked!
Not sure if those are the exact steps I followed because all I did was a hole lot of messing around and trying absurd things out, but think this is how I fixed it.
Let me know if it worked for you or if you still can't fix your problem
Best of luck
Resverse
Click to expand...
Click to collapse
Thank you very much!!!! I'll try tomorrow and tell you.
I appreciate a lot!

First of all now works but to be honest, I don't know if the way I fix makes sense or if is correct but not for the same reason I do but I'll try to explain...
I had cm-14.1-20161218-NIGHTLY and I tried to update via OTA to 20161220 the phone reboot and I get the bootloop. The first I thought, install again the ROM making wipe data and blabla... nothing work.
I tried to "reflash" the recovery, nothing. Flashed cm recovery, it always gave me error trying to flash the rom. I tried to install with stock recovery, errors too.
I was reading hundred of post looking for my issues, device unauthorized, "error 7" in twrp... I was crazy.
At last I thought, I've been trying to install from SDcard, if I try to install from internal memory? and I install again the twrp to transfer the ROM and Gapps to the internal memory and... it worked!!!!
Long story but with happy ending.
Thank you for your help I appreciate and sorry for my english.First of all now works but to be honest, I don't know if the way I fix makes sense or if is correct but not for the same reason I do but I'll try to explain...
I had cm-14.1-20161218-NIGHTLY and I tried to update via OTA to 20161220 the phone reboot and I get the bootloop. The first I thought, install again the ROM making wipe data and blabla... nothing work.
I tried to "reflash" the recovery, nothing. Flashed cm recovery, it always gave me error trying to flash the rom. I tried to install with stock recovery, errors too.
I was reading hundred of post looking for my issues, device unauthorized, "error 7" in twrp... I was crazy.
At last I thought, I've been trying to install from SDcard, if I try to install from internal memory? and I install again the twrp to transfer the ROM and Gapps to the internal memory and... it worked!!!!
Long story but with happy ending.
Thank you for your help I appreciate and sorry for my english.

i accidentally flashed a custom rom over oxygenos lol help (really though help)

Hi.
So this was pretty stupid of me. I was trying to flash LiquidRemix onto my OP6, but I forgot to wipe the system partition. Flashed the rom, then blu_spark twrp, and rebooted into recovery to flash gapps and all. Got a black screen with a static LED. Didn't think that was a big issue cause this has happened before with normal TWRP on OB6 or OB7. Tried hard resetting to see if I could get into system, same result. Tried fastboot flashing 9.0.2, no help. And finally tried flashing OB9 via fastboot, and also no help.
I've reverted back to my tiny S6 and have sent repair request to OP. I haven't gotten anything back yet, so I thought in the mean time, I'd look for help on XDA and try to fix it before having the chance to send it in.
Any help/advice would be greatly appreciated.
Cheers
// EDIT
Figured out how to fix it. Used the MSMDownloadTool to unbrick my device. Worked wonders. Thanks to r/oneplus Discord

I did something like that I had to format data after I flashed the stock rom

mightyblazer said:
I did something like that I had to format data after I flashed the stock rom
Click to expand...
Click to collapse
How did you get to format? I really can't get into the OS or recovery at all

I was actually able to boot into TWRP maybe you can get into fastboot? And try flashing TWRP again

mightyblazer said:
I was actually able to boot into TWRP maybe you can get into fastboot? And try flashing TWRP again
Click to expand...
Click to collapse
I'm able to get into fastboot, but even if I fastboot boot [insert twrp file name here], it'd still result in the blank screen and static LED

Hmm I don't know then sorry

Try
fastboot flash boot twrp.zip
Then
fastboot reboot
You will need to use full stock rom first before doing anything else though.

I was in the same boat as you the other day. I flashed different versions of twrp until i managed to boot one because some twrp isn't compatible with pie.

Lol I never wipe system...

Might sound like a "hard-bricking" issue since you cant boot into the OS nor recovery. There 's a hard brick recovery guide, but it'll put you down to oreo OOS: https://forum.xda-developers.com/oneplus-6/how-to/tool-msmdownloadtool-v4-0-international-t3798892
As long as you can boot into fastboot, you can follow the guide's process with no problem.

Help wanted: Device shutting off, rebooting to stock recovery when booted

Dear op7p xda community,
A few months ago, I rooted my device and flashed TWRP succesfully. After a stock OTA (still Pie), I lost both. Today, I wanted to re-root and re-flash TWRP. I used mauronofrio's Tool All In One 2.0.0.7 for this. I didn't flash TWRP, but booted it and used that to flash Magisk 19.4. Now, I wanted to see if the rooting process was successful, so I booted the OS. Unfortunately, once it boots and reaches the lockscreen, the "shutting off..." prompt immediately shows and reboots me into the stock recovery.
Edit: I now flashed TWRP after booting TWRP again and ran Magisk to root it again. Unfortunately, the problem persists (only now reboots to TWRP instead of stock recovery). Help is much appreciated!
Can someone help me get my phone to work again? Thanks a lot in advance!
Regards,
Wouty

What version TWRP? Maybe try a different one?

redpoint73 said:
What version TWRP? Maybe try a different one?
Click to expand...
Click to collapse
Thank you for your reply. I am now on TWRP 3.3.1-4 (latest). I have tried to factory reset and wipe the phone in hopes of getting it to start properly again, but now the OS doesn't even boot and immediately reboots me into TWRP. I have now tried to flash 3 different stock, official ROMs, both International and Europe, like OnePlus7ProOxygen_21.O.14_OTA_014_all_1907281611. I used the recommended flashing instructions (flash ROM, flash TWRP, reboot TWRP, flash Magisk) But none of them boot at all. Only TWRP is usable now. I don't know what to do

Wouty said:
Thank you for your reply. I am now on TWRP 3.3.1-4 (latest). I have tried to factory reset and wipe the phone in hopes of getting it to start properly again, but now the OS doesn't even boot and immediately reboots me into TWRP. I have now tried to flash 3 different stock, official ROMs, both International and Europe, like OnePlus7ProOxygen_21.O.14_OTA_014_all_1907281611. I used the recommended flashing instructions (flash ROM, flash TWRP, reboot TWRP, flash Magisk) But none of them boot at all. Only TWRP is usable now. I don't know what to do
Click to expand...
Click to collapse
When it reboots back to TWRP try to format data if that doesn't work then you need to use MSM tool.

boybkol said:
When it reboots back to TWRP try to format data if that doesn't work then you need to use MSM tool.
Click to expand...
Click to collapse
Thanks for your reply. I had indeed wiped data, but that worsened the situation (not booting at all, instead of rebooting once booted). I have now tried this https://forum.xda-developers.com/oneplus-7-pro/how-to/rom-stock-fastboot-roms-oneplus-7-pro-t3931424 and it now seems to be booting (booting animation on-going for quite some time now, though). I will keep you posted. If it doesn't work, I'll look into the MSM tool. Thanks for the suggestion!

Wouty said:
I am now on TWRP 3.3.1-4 (latest).
Click to expand...
Click to collapse
That is the latest official TWRP for this device. The official builds don't support Android 10, as decryption is not supported, so that may be part of your problem. The latest unofficial is -70, and I believe you need to use build -65 or later for Android 10.
https://forum.xda-developers.com/on...nt/recovery-unofficial-twrp-recovery-t3931322
---------- Post added at 11:13 AM ---------- Previous post was at 11:12 AM ----------
Wouty said:
Thanks for your reply. I had indeed wiped data, but that worsened the situation
Click to expand...
Click to collapse
Wipe is not the same as format. In TWRP, go to Wipe section, and you will see a button "Format data".

If you are now stuck on a boot loop, try booting into twrp and clearing cache. If you still can't boot, then i recommend downloading the full official rom and flashing it via fastboot. This will remove twrp and u'll end up with stock recovery and everything. Then after that follow proper instructions to install twrp first, then clear cache. Then magisk, and clear cache.

milindpatel63 said:
If you are now stuck on a boot loop, try booting into twrp and clearing cache. If you still can't boot, then i recommend downloading the full official rom and flashing it via fastboot. This will remove twrp and u'll end up with stock recovery and everything. Then after that follow proper instructions to install twrp first, then clear cache. Then magisk, and clear cache.
Click to expand...
Click to collapse
Trying to flash an official ROM via fastboot for a second time did indeed solve the problem for me. Now able to boot. Now backing up everything to make sure I'm able to solve these issues faster in the future. Thanks to all for your input!

Fastboot Bootloop

I got my OnePlus 7 Pro today and tried to install Magisk by patching the boot.img. After trying to flash the patched image, I now have an issue where rebooting the devices leads me straight back to the bootloader. Trying to enter recovery also leads me straight back to the bootloader. I tried flashing the original boot.img I extracted from the OTA update file provided by OnePlus, but it still isn't working. I do not have TWRP or any custom recovery installed. Any help would be much appreciated. I noticed similar threads, however they all installed twrp, though I haven't yet as trying to run "fastboot boot twrp.img" always resulted in it booting to a screen saying "fastboot mode" which wasn't terribly helpful.
Edit: Its not the tmobile/5g/carrier version. I purchased it through OnePlus' website though I forget the exact model number.

Well, "fastboot boot twrp.img" does not work on all devices, sometimes you have to use: fastboot flash boot insert_twrp_img_name_here.img​Learned that the hard way, also use the unofficial twrp from mauronofrio.
Had the same problem as you have, and fixed it with that unofficial twrp.

Faith1105 said:
Well, "fastboot boot twrp.img" does not work on all devices, sometimes you have to use: fastboot flash boot insert_twrp_img_name_here.img​Learned that the hard way, also use the unofficial twrp from mauronofrio.
Had the same problem as you have, and fixed it with that unofficial twrp.
Click to expand...
Click to collapse
Did you need to completely revert to stock after the issue, or did flashing twrp fix the fastboot loop?
Edit: Trying to flash the stock fastboot rom currently as flashing twrp did nothing probably because me trying to fix it broke everything. Hopefully the stock rom will get everything back to a working state where I can try again, just this time flashing twrp.
Also using windows this time instead of linux....

mnbvcxzl90 said:
Did you need to completely revert to stock after the issue, or did flashing twrp fix the fastboot loop?
Edit: Trying to flash the stock fastboot rom currently as flashing twrp did nothing probably because me trying to fix it broke everything. Hopefully the stock rom will get everything back to a working state where I can try again, just this time flashing twrp.
Also using windows this time instead of linux....
Click to expand...
Click to collapse
Ok, so, trying to restore stock seems to have failed miserably.... any advice is most welcomed qq

OK.... so trying to unbrick the device using the msm stuff, I couldn't even make it to the downloader screen. After holding volume +/- and powering off, my screen is now black HOWEVER the phone gets detected by windows when I plug & unplug it. I have no idea what to do anymore. Someone please help

Figured I'd give the solution here in case someone else is in the same exact problem as me:
Follow the instructions over at https://forum.xda-developers.com/oneplus-7-pro/how-to/op7pro-collection-unbrick-tools-t3956595
I tried to de-brick it using the fastboot roms and all that, no dice. The only thing that seems to have worked was following the above and using the msm tool. Everything wiped, but hey, at least the phone is bootable again and now I have a way to fix it should this happen again. Yay for happy endings.
Edit: Also, following Faith1105's advice, flashing twrp to boot instead of trying to just boot it first worked successfully and from there I was able to install magisk.
Edit 2: Now wifi isn't working.... why life, why...
Edit 3: OK: EVERYTHING IS GOOD NOW. Twrp ran into a boot loop issue, used twrp to flash the most recent android 10 zip, rebooted and was greeted by stock recovery, then used that to wipe absolutely everything and reboot. After skipping through initial setup and making use wifi was working I rebooted again and this time tried booting twrp the way the usual instructions say to, this time it worked for whatever reason so once that started I used twrp to flash twrp's installer and magisk. It looks like everything is working correctly now. If you have the same issue maybe this stuff will work for you or maybe not: I don't know, and honestly I'm now brain dead lol.

Help, I can flash and boot LineageOS but not OxygenOS

Hi, as the title explains I can flash and boot into lineage os but when I try to flash a stock OxygenOS signed flashable zip from this thread (https://forum.xda-developers.com/oneplus-6/how-to/oneplus-6-mirrors-official-oxygen-os-t3792244)
and when I boot to system, the screen doesn't show a boot logo, it just goes black for a few seconds before rebooting back to twrp (also if it helps, when it goes to twrp all the files are gibberish, I have to shut off the phone and boot into it from fastboot or I can't see any files).
This all started because I misunderstood the instructions and tried to flash an ota package which then broke the system, it's working now but I'd much rather use OOS as Lineage is missing a lot of the features I'm used to on Oxygen.
I've also tried the "flash-all-partitins-fastboot" from https://forum.xda-developers.com/oneplus-6/how-to/rom-stock-fastboot-roms-oneplus-6-t3796665 but unfortunately that gave the same issue, it just went back to recovery and wouldn't load OOS.
If anyone has any ideas on how to get back to oxygen that'd be super helpful! I'm considering using the MSM tool but I'd rather not have to start from scratch and lose all my files.

I'm just guessing, but there might be something wrong with your TWRP, did you try re-flashing it?

mati11233 said:
I'm just guessing, but there might be something wrong with your TWRP, did you try re-flashing it?
Click to expand...
Click to collapse
I should've clarified in the post, I mean all the files are gibberish (as in not decrypted I think?) but when I
Code:
fastboot boot twrp.img
it works fine and I can see all the files.
I've probably tried flashing it 4 times through twrp but every time it just does the same thing, boot to system just shows a black screen for a few seconds then reboots to twrp.
I'd love to use blu_spark like everyone recommends but I can't find the blu_spark recovery for the op6, only their kernel.

The reason why it's gibberish is because your device is encrypted and you need to input the password in the twrp to be able to access it. Seems the twrp doesn't detect the encryption correctly so there might be something wrong with it.
Here is the bluespark twrp https://github.com/engstk/android_device_oneplus_enchilada/releases

mati11233 said:
The reason why it's gibberish is because your device is encrypted and you need to input the password in the twrp to be able to access it. Seems the twrp doesn't detect the encryption correctly so there might be something wrong with it.
Here is the bluespark twrp https://github.com/engstk/android_device_oneplus_enchilada/releases
Click to expand...
Click to collapse
I just tried with blu_spark and the same thing happens but I realised something else, twrp only doesn't work on slot A.
If I see that it didn't decrypt the files, I can set B to active, reboot to recovery, and it works perfectly.
I noticed after one of the failed boots it switched the active slot to B even though I had set it to A before flashing. So every time it doesn't show the logo or anything, it sets the active slot from A to B and reboots to recovery.
Also I just looked and from the Backup page, it shows 2.7 GB for system on slot A and 1.7GB on slot B so I'm going to try wiping both and reflashing the flashable signed zip on each then twrp.
UPDATE: Just did that and the twrp installer was giving an error saying unsupported android version so I looked and system is only 4MB after flashing that package (OnePlus6Oxgygen_22_OTA_034_all_...zip), I'm trying an older one (...OTA_026...zip) to see if that actually works.
So I tried with the older one and lineage and they both still left the system partition at 4MB and the blu_spark twrp installer isn't detecting an android version. The system image partition is at 2.6GB if that means anything.
Oh wait more update, I'm dumb and shut off the phone while taking the case off (got stuck and it was pushing the power button) and even though the twrp installer couldn't detect anything and twrp said No OS installed when trying to boot to system, lineage just started up, no problem. I am very confused I miss when there was one system partition.

How are you flashing the OS?

mati11233 said:
How are you flashing the OS?
Click to expand...
Click to collapse
I'm using twrp, blu_spark and normal, and both have the same result. They can flash lineage and it runs fine, but oxygen refuses to boot and just switches the active slot and goes to recovery instead.
I also tried the fastboot rom flashing thing from the thread I linked to in the OP and it's the same thing, just goes back to recovery and wont boot.
P.S. I'm currently copying over /sdcard to an external drive and if I can't figure out how to fix this by the time that's done, I'll just use MsmDownloadTool and start over.

And you are wiping each time before flashing it, right? If it is the case then the download tool is probably the easiest way to go about it, rather than spending days troubleshooting it.

mati11233 said:
And you are wiping each time before flashing it, right? If it is the case then the download tool is probably the easiest way to go about it, rather than spending days troubleshooting it.
Click to expand...
Click to collapse
I've tried it with and without wiping and it always seems to do the same thing either way, works with LOS not with OOS. Thanks for the help! but yeah I think I'm just going to end up using the download tool once everything's over.