Database Develop

Can't seem to root 6.0.1

I'm having an issue rooting my Nexus 6. I rooted it easily enough a couple months ago with the NRT. I recently used the Flash stock + Unroot options to upgrade to 6.01. However, when I tried rooting it again I ran into problems. I plugged it up, selected the root option, it tested ADB connectivity, booted into TWRP and that's when I ran into an issue. It told me then that ADB device was not found. I rebooted my phone and though I can boot into it, I now get a "your phone is corrupt" message when I turn it on. I tried again and has the same issue.
I followed the instructions it gave me about checking my drivers and they're fine. Anyone have any idea what's going on and how I can get around it? Also help removing the "your phone is corrupt message"would be cool too, but it's not a priority since it seems harmless and I'm sure I could find it easily enough with a little Googling, the other problem I have not been able to find an answer to though.

Rentom said:
I'm having an issue rooting my Nexus 6. I rooted it easily enough a couple months ago with the NRT. I recently used the Flash stock + Unroot options to upgrade to 6.01. However, when I tried rooting it again I ran into problems. I plugged it up, selected the root option, it tested ADB connectivity, booted into TWRP and that's when I ran into an issue. It told me then that ADB device was not found. I rebooted my phone and though I can boot into it, I now get a "your phone is corrupt" message when I turn it on. I tried again and has the same issue.
I followed the instructions it gave me about checking my drivers and they're fine. Anyone have any idea what's going on and how I can get around it? Also help removing the "your phone is corrupt message"would be cool too, but it's not a priority since it seems harmless and I'm sure I could find it easily enough with a little Googling, the other problem I have not been able to find an answer to though.
Click to expand...
Click to collapse
flash any custom kernel to get rid of that message

simms22 said:
flash any custom kernel to get rid of that message
Click to expand...
Click to collapse
Don't really have any desire to use a custom kernel, but I'll keep it in mind. I just don't know why it popped up now when nothing happened, but when I actually rooted the device I never saw that message.

Rentom said:
Don't really have any desire to use a custom kernel, but I'll keep it in mind. I just don't know why it popped up now when nothing happened, but when I actually rooted the device I never saw that message.
Click to expand...
Click to collapse
because google put it there, it is new.

It was rooted with an older version of su. You probably said yes when twrp asked if you wanted to root it. Flash it back to stock, if you use nrt again select the no wipe option to save your data. And make sure your net is current. If you do it by hand skip the user partition.
When you root it male sure you use a newer su. 2.67 is the current version I believe.
Sent from my Nexus 6 using XDA Labs

TonikJDK said:
It was rooted with an older version of su. You probably said yes when twrp asked if you wanted to root it. Flash it back to stock, if you use nrt again select the no wipe option to save your data. And make sure your net is current. If you do it by hand skip the user partition.
When you root it male sure you use a newer su. 2.67 is the current version I believe.
Sent from my Nexus 6 using XDA Labs
Click to expand...
Click to collapse
Yeah I let twrp root it when it asked when I did it two months ago. Was that a bad thing? I thought I read that it was if you were rooting 6.0.1, but I was rooting 6.0 so I decided to see what would happen, and it went smoothly.

That is what is causing the corrupted message. It was an old version of su and it modified the system.
Sent from my Nexus 6 using XDA Labs

TonikJDK said:
That is what is causing the corrupted message. It was an old version of su and it modified the system.
Sent from my Nexus 6 using XDA Labs
Click to expand...
Click to collapse
I see. Makes sense. Alright, thanks. I already did flash it back to stock to update to 6.0.1, so I'm not sure why you told me to flash it back to stock and then install su 2.67.

I am also having this problem. Twrp will not let me flash a kernel or SuperSU. I went back to stock recovery and tried to root using cf auto root. But no luck. Phone runs fine, I upgraded to 6.01 with adb and did not flash user data. Any help would be greatly appreciated.

Mongo23ny said:
I am also having this problem. Twrp will not let me flash a kernel or SuperSU. I went back to stock recovery and tried to root using cf auto root. But no luck. Phone runs fine, I upgraded to 6.01 with adb and did not flash user data. Any help would be greatly appreciated.
Click to expand...
Click to collapse
flash twrp again, pick the kernel and SuperSU, then flash in twrp. if you can't pick them, make sure that twrp is mounted. and you DID NOT use adb to boot 6.0.1, you used fastboot, that is different than adb.

simms22 said:
flash twrp again, pick the kernel and SuperSU, then flash in twrp. if you can't pick them, make sure that twrp is mounted. and you DID NOT use adb to boot 6.0.1, you used fastboot, that is different than adb.
Click to expand...
Click to collapse
I can pick them both, when I swipe to flash it just goes back to the teamwin start up screen. Tried many, many times.

Mongo23ny said:
I can pick them both, when I swipe to flash it just goes back to the teamwin start up screen. Tried many, many times.
Click to expand...
Click to collapse
OK, try flashing twrp again, maybe it just errored. flash twrp version 3.0

simms22 said:
OK, try flashing twrp again, maybe it just errored. flash twrp version 3.0
Click to expand...
Click to collapse
Tried flashing twrp a couple of times, went back to stock recovery and then twrp. No luck. Also, phone will not boot with custom recovery only with stock. Not sure if I tried 3.0.0.0

simms22 said:
OK, try flashing twrp again, maybe it just errored. flash twrp version 3.0
Click to expand...
Click to collapse
Do I keep system read only in twrp 3.0?

Mongo23ny said:
Do I keep system read only in twrp 3.0?
Click to expand...
Click to collapse
no, do not keep system read only, ever.

simms22 said:
no, do not keep system read only, ever.
Click to expand...
Click to collapse
Thanks for all your help, did a clean install, fastboot flashed 6.01. I had gotten that corrupt phone message when I rebooted again but I took some security update and that got rid of the message. I flashed twrp 3.0.0.0 and SuperSU 2.67 and got root back. No worries, thx again.

Mongo23ny said:
Do I keep system read only in twrp 3.0?
Click to expand...
Click to collapse
simms22 said:
no, do not keep system read only, ever.
Click to expand...
Click to collapse
If you are using the systemless root method then yes, you do want to keep system read only.

alryder said:
If you are using the systemless root method then yes, you do want to keep system read only.
Click to expand...
Click to collapse
I kept it in read only, installed SuperSU 2.67 in twrp.

One plus 3 china A3000 problem

I don't know what problem is this. Here is the link https://youtu.be/gvcj1V8XQwo I posters it in YouTube because it is quite hard to explain. I think no one has occur this problem. Any ideas how to fix it?
One plus 3 china a3000
Flash official twrp from one plus website
Successfully unlock bootloader
Install official op3 oxygen os
Successfully flash twrp official by one plus website

try flashing official recovery and sideload the full latest OOS.

angdaminaman said:
try flashing official recovery and sideload the full latest OOS.
Click to expand...
Click to collapse
What is OOS btw. What is OTA?? How do I flash the OOS? I had install twrp official by one plus website sorry I still a newbie. Btw I had tried using adb side load it also stuck halfway.

Abraham tan said:
What is OOS btw. What is OTA?? How do I flash the OOS? I had install twrp official by one plus website sorry I still a newbie. Btw I had tried using adb side load it also stuck halfway.
Click to expand...
Click to collapse
oxygen os for OOS, then over the air update for ota.. twrp official by oneplus ?? oneplus would not provide twrp.. they will only provide their own stock recovery..
edit:
my bad. they supplied twrp on their website. lol.

reyscott said:
oxygen os for OOS, then over the air update for ota.. twrp official by oneplus ?? oneplus would not provide twrp.. they will only provide their own stock recovery..
edit:
my bad. they supplied twrp on their website. lol.
Click to expand...
Click to collapse
Idk what u mean. I still a newbie. Can I give me more detail on how? I had tried install oxygen os official by one plus it is still the same problem.

http://forum.xda-developers.com/oneplus-3/how-to/guide-mega-unbrick-guide-hard-bricked-t3405700
Sent from my ONEPLUS A3000

fiepi said:
http://forum.xda-developers.com/oneplus-3/how-to/guide-mega-unbrick-guide-hard-bricked-t3405700
Sent from my ONEPLUS A3000
Click to expand...
Click to collapse
So this assume that my one plus 3 hardware problem or hard brick ?

Abraham tan said:
So this assume that my one plus 3 hardware problem or hard brick ?
Click to expand...
Click to collapse
i just restored mine using twrp and it worked for me.. try to check with oneplus customer support

reflash the original oneplus recovery, not twrp, thru fastboot.
download the full oxygen os in your pc. the sideload it thru your pc via original oxygen recovery.

angdaminaman said:
reflash the original oneplus recovery, not twrp, thru fastboot.
download the full oxygen os in your pc. the sideload it thru your pc via original oxygen recovery.
Click to expand...
Click to collapse
what i did on mine was to flash official 3.2.6 and never thought that it would work. but it did.. and then after booting up, i flash the stock oneplus recovery on twrp then updated my phone with the 3.2.7 ota..

reyscott said:
what i did on mine was to flash official 3.2.6 and never thought that it would work. but it did.. and then after booting up, i flash the stock oneplus recovery on twrp then updated my phone with the 3.2.7 ota..
Click to expand...
Click to collapse
thats good sir.
i have china version op3 as well. what i did to flash OOS is just sideload thru stock recovery. i didnt even need to unlock bootloader. since they are both official OS.
so that might work for the original poster. just use stock recovery and adb sideload OOS

angdaminaman said:
thats good sir.
i have china version op3 as well. what i did to flash OOS is just sideload thru stock recovery. i didnt even need to unlock bootloader. since they are both official OS.
so that might work for the original poster. just use stock recovery and adb sideload OOS
Click to expand...
Click to collapse
Btw what is OOS how do I flash it?

Abraham tan said:
Btw what is OOS how do I flash it?
Click to expand...
Click to collapse
OOS is OxygenOS.......

Abraham tan said:
Btw what is OOS how do I flash it?
Click to expand...
Click to collapse
aassuming you know all the basics and you have computers around you, especially windows os.
1. download everything (latest full oxygen os zip found in downloads.oneplus.net, original oxygen recovery also found in that link)
2. boot to fastboot
3. flash original recovery (i believe you know how to flash, you have twrp in your oneplus 3, this should not be a problem to you)
4. reboot to recovery
5. choose adb sideload
6. adb sideload the latest oxygen os zip
you should really just follow step by step the instruction found in the downloads.oneplus.net, assuming you now have the original recovery, not the twrp.
tell me if you still can not follow. ill make a spoonfeed tutorial when i get home using pc. its really hard to write a step by step tutorial using phone.

@abraham I noticed you didn't wipe dalvik cache before installing the OOS. Try wiping dalvik cache, cache, data and system to see if that could solve the problem.
Sent from my ONEPLUS A3003 using Tapatalk

angdaminaman said:
aassuming you know all the basics and you have computers around you, especially windows os.
1. download everything (latest full oxygen os zip found in downloads.oneplus.net, original oxygen recovery also found in that link)
2. boot to fastboot
3. flash original recovery (i believe you know how to flash, you have twrp in your oneplus 3, this should not be a problem to you)
4. reboot to recovery
5. choose adb sideload
6. adb sideload the latest oxygen os zip
you should really just follow step by step the instruction found in the downloads.oneplus.net, assuming you now have the original recovery, not the twrp.
tell me if you still can not follow. ill make a spoonfeed tutorial when i get home using pc. its really hard to write a step by step tutorial using phone.
Click to expand...
Click to collapse
Tried every possible method. I use twrp official flash zip or adb side load also cannot. I tried using stock recovery also cannot. I tried using the hard brick way last night but after the flash, the phone is charging and I know it is OOS charging thing. Like you power off your phone and let it charge it wok come out a battery logo and charge your phone. I got that so I assume that I have OOS install. But when I power it on it also stuck at booting the phone. So tired right now being finding solution for about 2 weeks. Could it be the hardware problem that effect the phone?

Butit said:
@abraham I noticed you didn't wipe dalvik cache before installing the OOS. Try wiping dalvik cache, cache, data and system to see if that could solve the problem.
Sent from my ONEPLUS A3003 using Tapatalk
Click to expand...
Click to collapse
Thanks for the advise. Tried but no luck. Still the same problem. What seems to be the problem? Hardware? Or could it be a fake op3 that I bought from china?

Abraham tan said:
Thanks for the advise. Tried but no luck. Still the same problem. What seems to be the problem? Hardware? Or could it be a fake op3 that I bought from china?
Click to expand...
Click to collapse
if you were able to flash op3 twrp, then its not fake. the twrp you downloaded is designed for op3, right? if you have successfully flashed it, then its an authentic op3.
just return/exchange it if possible.
i have changed my Hydrogen OS to Oxygen OS smoothly. I didnt even need to unlock bootloader nor change recoveries.

angdaminaman said:
if you were able to flash op3 twrp, then its not fake. the twrp you downloaded is designed for op3, right? if you have successfully flashed it, then its an authentic op3.
just return/exchange it if possible.
i have changed my Hydrogen OS to Oxygen OS smoothly. I didnt even need to unlock bootloader nor change recoveries.
Click to expand...
Click to collapse
Hmm what's seems to be the problem. I live in Malaysia and I bought the op3 from china so it is kinda hard to return. Maybe I bring to service centre for repair.

Abraham tan said:
What is OOS btw. What is OTA?? How do I flash the OOS? I had install twrp official by one plus website sorry I still a newbie. Btw I had tried using adb side load it also stuck halfway.
Click to expand...
Click to collapse
You have to wait when it stuck half way, it takes some time there and continue usually, this is what i seen?

Modem/Internet Drivers are Missing

Hi, I am new to this forum but old on android. My oneplus 3t brick yesterday and i don't know why. I never rooted phone and always update phone via OTA. I contacted Oneplus support yesterday and they arrange a remote session where they are unable to install anything via msmdownload tool. I download msmdownload tool yesterday from this forum and my phone works but there is no modem in it. I am unable to connect to wifi and SIM internet. Oxygen OS version install at the moment is 3.5.1 and android version is 6.0.1. Need help from some seniors.

Update by using on the of the official "full zips"? These include the modem, so I would think that would fix the problem, unless there is a more serious issue (hardware failure, etc.):
https://forum.xda-developers.com/oneplus-3t/how-to/rom-oxygenos-3-5-4-mm-ota-update-t3519074

redpoint73 said:
Update by using on the of the official "full zips"? These include the modem, so I would think that would fix the problem, unless there is a more serious issue (hardware failure, etc.):
https://forum.xda-developers.com/oneplus-3t/how-to/rom-oxygenos-3-5-4-mm-ota-update-t3519074
Click to expand...
Click to collapse
I tried multiple time but device stuck in boot loop. Downloaded ROM from Oneplus official site.

xusmanmalik said:
I tried multiple time but device stuck in boot loop. Downloaded ROM from Oneplus official site.
Click to expand...
Click to collapse
The full zip or the OTA?
Is your phone rooted/TWRP installed, or is it stock?

redpoint73 said:
The full zip or the OTA?
Is your phone rooted/TWRP installed, or is it stock?
Click to expand...
Click to collapse
Phone is stock not rooted. When i upgrade locally or through adb process phone stuck in bootloop.

xusmanmalik said:
Phone is stock not rooted. When i upgrade locally or through adb process phone stuck in bootloop.
Click to expand...
Click to collapse
Now i updated from 3.5.1 to 3.5.4 but issue still exist

xusmanmalik said:
Now i updated from 3.5.1 to 3.5.4 but issue still exist
Click to expand...
Click to collapse
Upgrading from 3.5.4 to 4.0.2 phone again stuck at boot screen. I don't know what to do know. Should i go for warranty claim or try something else. Need HELP!!!!
Thanks in Advance.

Are you able to go to fastboot mode? If yes, go for it:
https://forums.oneplus.net/threads/...wrp-root-nandroid-efs-backup-and-more.475142/
Install TWRP too. Now you're able to wipe everything and upload a full ROM to your device (Thanks to MTP-mode via TWRP, so handy!). Flash the full ROM and have a try .

MickyFoley said:
Are you able to go to fastboot mode? If yes, go for it:
https://forums.oneplus.net/threads/...wrp-root-nandroid-efs-backup-and-more.475142/
Install TWRP too. Now you're able to wipe everything and upload a full ROM to your device (Thanks to MTP-mode via TWRP, so handy!). Flash the full ROM and have a try .
Click to expand...
Click to collapse
Micky Thanks for the help. I will give a try and will inform further.

I ****ed up somewhere. Encryption unsuccessful Error.

xusmanmalik said:
I ****ed up somewhere. Encryption unsuccessful Error.
Click to expand...
Click to collapse
Do you have TWRP installed? Just wipe your phone, get an otg cable and a flash drive, you can flash everything from the flash drive

I revert back trying again now.

xusmanmalik said:
Micky Thanks for the help. I will give a try and will inform further.
Click to expand...
Click to collapse
Hi Micky Foley, I successfully followed all steps and now i am on twrp and su installed.

But still i am unable to install other ROM than 3.5.*

Your last option is the warranty then mate

Potentially bricked?

I was running tugapower and decided to go back to oxygen. I downloaded everything off oneplus' website and flashed the stock recovery in twrp but when sideloading oxygen os it fails at 47%. How can I fix this?

Just use the normal Qualcomm emergency recovery, it's near impossible to actually brick your phone.

Xanthos58 said:
I was running tugapower and decided to go back to oxygen. I downloaded everything off oneplus' website and flashed the stock recovery in twrp but when sideloading oxygen os it fails at 47%. How can I fix this?
Click to expand...
Click to collapse
Must of the time low memory on computer causes that error simply restart your computer then start again with sideloading process.
[emoji111]️
Sent from my ONEPLUS A3003 using Tapatalk

Please help me downgrade from Pie to Oreo

Hi guys, I have a OnePlus 3T which I have been using since 2017 and it worked perfectly. But a few months ago it updated to Android 9 Pie and ever since then my phone has gotten far slower, keeps hanging on certain things and sometimes I can't even make a call directly from contacts. I have to click call then it seems like the call is starting up but then just freezes and cuts off. Afterward, I have to go to call history and make the call again and it works.
I waited a while to see if a newer update will fix this slowdown and issues but after 2 or 3 more Pie updates it's still unresponsive and crashes the dialer. So I just want to know if anyone can tell me where I can find a ROM for final Oreo version that is compatible with OnePlus 3T and the best way I can downgrade.
I tried following a guide already but I ran into issues simply flashing TWRP. I Installed the ABD drivers, unlocked bootloader and rebooted.
Then in fastboot mode, I tried to flash it and it seemed to work because in the ABD PowerShell windows it said "Okay" after I used the cmd to flash.
But when I reboot and go into recovery, I still have the default recovery options.
This is the first time I am trying to flash my phone and I'm only doing it because it went from a phone that ran super smooth to one that is barely usable...I mean Contacts and the actual Phone apps are hanging and crashing. It even crashes when I try to answer incoming calls sometimes. The phone keeps ringing and I get a message saying the program is unresponsive, giving me options to "wait" or "close"

TT-Twister said:
...
I tried following a guide already but I ran into issues simply flashing TWRP. I Installed the ABD drivers, unlocked bootloader and rebooted.
Then in fastboot mode, I tried to flash it and it seemed to work because in the ABD PowerShell windows it said "Okay" after I used the cmd to flash.
But when I reboot and go into recovery, I still have the default recovery options.
...
Click to expand...
Click to collapse
Something you need to know: stock OOS will always reinstall the stock recovery when the phone boots into system.
So if you
1. Booted into fastboot
2. Flashed TWRP
3. Booted your phone
4. Booted into recovery
then TWRP got overwritten in step 3.
What you should have done after flashing TWRP was boot into recovery directly (use the volume keys while in fastboot mode to select that option then press the power button).
Sent from my OnePlus 3T using XDA Labs

BillGoss said:
Something you need to know: stock OOS will always reinstall the stock recovery when the phone boots into system.
So if you
1. Booted into fastboot
2. Flashed TWRP
3. Booted your phone
4. Booted into recovery
then TWRP got overwritten in step 3.
What you should have done after flashing TWRP was boot into recovery directly (use the volume keys while in fastboot mode to select that option then press the power button).
Sent from my OnePlus 3T using XDA Labs
Click to expand...
Click to collapse
Thanks for the reply...and it got me a step further. But when it got to TWRP it starts at "Mount Decrypt Data" I assumed this was my phone pin...and when I tried that it opens up a cmd window which said "unable to mount storage" then says "updating partition details" but it sort of freezes then the phone turns off and powers on with the notification LED being "white" but the screen is black and the phone just stays like this for ages. Only thing I could do is hold down the power button to power down the phone and restart it. At least TWRP seems to have flashed because even when I go into recovery from the boot menu it goes to TWRP.

TT-Twister said:
Thanks for the reply...and it got me a step further. But when it got to TWRP it starts at "Mount Decrypt Data" I assumed this was my phone pin...and when I tried that it opens up a cmd window which said "unable to mount storage" then says "updating partition details" but it sort of freezes then the phone turns off and powers on with the notification LED being "white" but the screen is black and the phone just stays like this for ages. Only thing I could do is hold down the power button to power down the phone and restart it. At least TWRP seems to have flashed because even when I go into recovery from the boot menu it goes to TWRP.
Click to expand...
Click to collapse
Personally I would not downgrade to Oreo. Pie works fine. The problems your were having could have probably been solved by simply doing a factory reset.
Since you've unlocked your bootloader, you've effectively done a factory reset. So try just booting the system and set up your phone again. It'll probably be fine now that you're doing a clean install.
Sent from my OnePlus 3T using XDA Labs

BillGoss said:
Personally I would not downgrade to Oreo. Pie works fine. The problems your were having could have probably been solved by simply doing a factory reset.
Since you've unlocked your bootloader, you've effectively done a factory reset. So try just booting the system and set up your phone again. It'll probably be fine now that you're doing a clean install.
Sent from my OnePlus 3T using XDA Labs
Click to expand...
Click to collapse
Yea...I have done several factory resets in the process of unlocking the bootloader and flashing twrp. So it didn't fix the issue. The main issue is linked to "contacts" which basically freezes most times I try to make a call. It makes the call but crashes contacts and the "Phone" app. Which is stupid because that's the main purpose of a phone.
Also, another key reason for wanting to downgrade to Oreo is the ability to record phone calls. This is very useful to me and those apps stopped working with Pie I think.

TT-Twister said:
Yea...I have done several factory resets in the process of unlocking the bootloader and flashing twrp. So it didn't fix the issue. The main issue is linked to "contacts" which basically freezes most times I try to make a call. It makes the call but crashes contacts and the "Phone" app. Which is stupid because that's the main purpose of a phone.
Also, another key reason for wanting to downgrade to Oreo is the ability to record phone calls. This is very useful to me and those apps stopped working with Pie I think.
Click to expand...
Click to collapse
If I was to go back to Oreo I would:
Download the full Oreo OOS ROM and backup everything you need onto your PC. Then in TWRP:
1. Do a factory reset
2. Flash OOS 5.0.4
3. Wipe>format data (to get rid of encryption)
4. Reboot system, which will also encrypt the data again and replace TWRP with the stock recovery
5. Use ADB to restore the data on your phone
6. Flash TWRP and restore your Oero backup.
Sent from my OnePlus 3T using XDA Labs

BillGoss said:
If I was to go back to Oreo I would:
Download the full Oreo OOS ROM and backup everything you need onto your PC. Then in TWRP:
1. Do a factory reset
2. Flash OOS 5.0.4
3. Wipe>format data (to get rid of encryption)
4. Reboot system, which will also encrypt the data again and replace TWRP with the stock recovery
5. Use ADB to restore the data on your phone
6. Flash TWRP and restore your Oero backup.
Sent from my OnePlus 3T using XDA Labs
Click to expand...
Click to collapse
Did you read what I said? I did what you said and manage to boot into TWRP but I told you the issue about encryption and my phone freezing.
So I don't know how I'm supposed to flash any OS if I can't get TWRP to work in the first place.

TT-Twister said:
Did you read what I said? I did what you said and manage to boot into TWRP but I told you the issue about encryption and my phone freezing.
So I don't know how I'm supposed to flash any OS if I can't get TWRP to work in the first place.
Click to expand...
Click to collapse
In that case, I hope you've got backups on your PC because you're going to have to format your phone. TWRP>Wipe>Format data. You'll need to cancel out of the password screen to do the wipe.
Then reboot into recovery and use ADB to copy the files to your phone and flash Oreo.
Sent from my OnePlus 3T using XDA Labs

BillGoss said:
In that case, I hope you've got backups on your PC because you're going to have to format your phone. TWRP>Wipe>Format data. You'll need to cancel out of the password screen to do the wipe.
Then reboot into recovery and use ADB to copy the files to your phone and flash Oreo.
Sent from my OnePlus 3T using XDA Labs
Click to expand...
Click to collapse
I got my data backed up using some software called "dr.fone" but how do I use ADB to copy files to the phone?
As I said at the start, this is literally the first time I'm trying to do this. I never flashed my phone before and never used ADB or TWRP before.
I'm literally just following instructions in guides and forums. So please don't assume I know how all of this works.

Hmm. I've been thinking about your problem and I have some questions/suggestions.
1. What version of TWRP are you using? (I would use the latest one from https://dl.twrp.me/oneplus3/ )
2. Can you boot your phone normally? If so, try setting a new password and say Yes for secure start up. Then verify that when you reboot you are prompted for a password (Starting Android screen, not just the lock screen). If that works, boot into TWRP. Does the new password work?

BillGoss said:
Hmm. I've been thinking about your problem and I have some questions/suggestions.
1. What version of TWRP are you using? (I would use the latest one from https://dl.twrp.me/oneplus3/ )
2. Can you boot your phone normally? If so, try setting a new password and say Yes for secure start up. Then verify that when you reboot you are prompted for a password (Starting Android screen, not just the lock screen). If that works, boot into TWRP. Does the new password work?
Click to expand...
Click to collapse
I'm using the latest version of TWRP (top one on that list)
I can boot the phone, and it works obviously. But I was having serious issues and slowdowns after updating to Pie.
Changing the password didn't work...but doing what you said before and formatting the device and rebooting into TWRP seems to have worked.
It's recognizing the storage and I can choose zip files to install.
Do you know the last version of Oreo that was compatible with the 3T? I think it's either 5.0.8 but they may have released 5.1.8 for it...I can't remember and can't seem to find the info anywhere.

TT-Twister said:
I'm using the latest version of TWRP (top one on that list)
I can boot the phone, and it works obviously. But I was having serious issues and slowdowns after updating to Pie.
Changing the password didn't work...but doing what you said before and formatting the device and rebooting into TWRP seems to have worked.
It's recognizing the storage and I can choose zip files to install.
Do you know the last version of Oreo that was compatible with the 3T? I think it's either 5.0.8 but they may have released 5.1.8 for it...I can't remember and can't seem to find the info anywhere.
Click to expand...
Click to collapse
Glad you can now get into TWRP.
5.0.8 was the last stable Oreo version (I never used betas).
Sent from my OnePlus 3T using XDA Labs

I would second the suggestion that you don't downgrade to Oreo. I was having the same issues you mentioned on Pie, but have since sorted them out. Pie is now running very nicely for me.
A good deep cleaning did it for me, even after a previous factory reset had failed to fix it.

ataft said:
I would second the suggestion that you don't downgrade to Oreo. I was having the same issues you mentioned on Pie, but have since sorted them out. Pie is now running very nicely for me.
A good deep cleaning did it for me, even after a previous factory reset had failed to fix it.
Click to expand...
Click to collapse
Well, it seems like downgrading to Oreo is going to be a huge task. Because my research I need to flash some stock firmware before being able to flash Oreo again.
Which I tried, but for some reason, it's not flashing it. So now I need to download the latest stable version of Pie for 3T again?
Can any of you tell me what version that is?

TT-Twister said:
Well, it seems like downgrading to Oreo is going to be a huge task. Because my research I need to flash some stock firmware before being able to flash Oreo again.
Which I tried, but for some reason, it's not flashing it. So now I need to download the latest stable version of Pie for 3T again?
Can any of you tell me what version that is?
Click to expand...
Click to collapse
What is the latest stable of Pie? 9.0.5
But Bill has already given you the steps for downgrading if you want.

TT-Twister said:
Well, it seems like downgrading to Oreo is going to be a huge task. Because my research I need to flash some stock firmware before being able to flash Oreo again.
Which I tried, but for some reason, it's not flashing it. So now I need to download the latest stable version of Pie for 3T again?
Can any of you tell me what version that is?
Click to expand...
Click to collapse
I decided to test downgrading to Oreo from Pie. And I learnt that it's basically the same process as upgrading from Oreo to Pie. Since my phone is unlocked and encrypted I had to remove the encryption using TWRP>Wipe>Format data: yes when going from Oreo to Pie and the same when going from Pie to Oreo.
So my process to downgrade is:
- Backup everything I want to keep from my phone.
- Flash OOS 5.0.8 full stock zip in TWRP. This completely overwrites the 9.0.5 firmware and system.
- Remove encryption: TWRP>Wipe>Format data: yes. (You'll lose everything on your phone)
- Reboot system (it re-encrypts the phone and replaces TWRP with stock recovery).
- Restored phone data, and so on.
Sent from my OnePlus 3T using XDA Labs

One more thing that I'd forgotten about: you can run OOS Oreo on the Pie firmware. So if you still have the Pie firmware installed, just restore an Oreo backup and you should be ok.
See point at the end of https://forum.xda-developers.com/on...ageos-16-0-oneplus-3-3t-t3866517/post79378447
Sent from my OnePlus 3T using XDA Labs

BillGoss said:
I decided to test downgrading to Oreo from Pie. And I learnt that it's basically the same process as upgrading from Oreo to Pie. Since my phone is unlocked and encrypted I had to remove the encryption using TWRP>Wipe>Format data: yes when going from Oreo to Pie and the same when going from Pie to Oreo.
So my process to downgrade is:
- Backup everything I want to keep from my phone.
- Flash OOS 5.0.8 full stock zip in TWRP. This completely overwrites the 9.0.5 firmware and system.
- Remove encryption: TWRP>Wipe>Format data: yes. (You'll lose everything on your phone)
- Reboot system (it re-encrypts the phone and replaces TWRP with stock recovery).
- Restored phone data, and so on.
Sent from my OnePlus 3T using XDA Labs
Click to expand...
Click to collapse
Do you have a link for the OOS 5.0.8 full stock zip with the firmware?
I downloaded files from these links:
https://www.getdroidtips.com/oxygenos-5-0-8-oneplus-3-3t/
https://www.androidjungles.com/oneplus-3t-flash-file/
But neither of them are flashing in TWRP.

TT-Twister said:
Do you have a link for the OOS 5.0.8 full stock zip with the firmware?
I downloaded it from here https://www.getdroidtips.com/oxygenos-5-0-8-oneplus-3-3t/ but it's not flashing in TWRP.
Click to expand...
Click to collapse
https://otafsg1.h2os.com/patch/amaz...n_28_OTA_070_all_1812060053_d75f3be1db2be.zip
Sent from my OnePlus 3T using XDA Labs

ataft said:
I would second the suggestion that you don't downgrade to Oreo. I was having the same issues you mentioned on Pie, but have since sorted them out. Pie is now running very nicely for me.
A good deep cleaning did it for me, even after a previous factory reset had failed to fix it.
Click to expand...
Click to collapse
What do you mean by deep cleaning?. I tried hard reset but after using apps phone again became dead slow.