OP5 bootloop issue - OnePlus 5 Questions & Answers

hello,
after following instructions to unlock bootloader, flash custom recovery, and root, i have gotten stuck with a bootloop. The issue started after trying to install Magisk.
I can boot into TWRP 3.2.3-0 and have tried many recommendations but do not seem to be able to boot into OS. I just get the constant boot animation.
thanks
edit: fixed

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Stuck at room boot animation, no recovery mode

I have installed Unofficial CM 13 successfully, but I forgot to root the device, so I go back and flash supersu file and reboot - I think I flashed wrong version for marshmallow. now phone stuck at cm boot animation, I have no recovery, only has access to download mode. I also have no access to phone through adb or fastboot.
I was in the similar situation before, where I was stuck at lg logo, and fix it by flashing stock rom (now I cannot find that thread), but now it tries to boot the rom, seems like a different situation.
What should I do?
lg g2 stuck on lg logo
Behzadsh said:
I have installed Unofficial CM 13 successfully, but I forgot to root the device, so I go back and flash supersu file and reboot - I think I flashed wrong version for marshmallow. now phone stuck at cm boot animation, I have no recovery, only has access to download mode. I also have no access to phone through adb or fastboot.
I was in the similar situation before, where I was stuck at lg logo, and fix it by flashing stock rom (now I cannot find that thread), but now it tries to boot the rom, seems like a different situation.
What should I do?
Click to expand...
Click to collapse
just short connectors and flash all partations again.

Flashed TWRP, phone no longer booting

I've been following the steps to install a custom recovery and ultimately root, but I'm now stuck unable to boot my phone.
I started on Android 7.1.1 and this is what I've done:
Installed Version UnlockTool_2017_0803(android M)
Unlocked the boot loader using the app
Restarted and entered fastboot
Ran "flash recovery twrp-3.1.0-0-Z01H-20170408.img" (downloaded from https://mega.nz/#F!p90wgAaY!l1JbJilmAUEKTKWu43pT9w)
Checked that TWRP was successfully installed (it was)
Rebooted but I'm stuck on the "Powered by Android" screen
I can see the following information:
Code:
FASTBOOT MODE
Image version - WW_user_20.31.49.2_20170620
DEVICE STATE- unlocked
Any advice on what I can do to boot successfully? I was planning on following the steps in the no os, no recovery.img (https://forum.xda-developers.com/zenfone-3-zoom/help/os-recovery-img-t3628944) thread, but it doesn't seem to be the same problem that I'm having.
Anyone have any tips or suggestions?
Let me answer my own question. I found that I needed to install SuperSU for the phone to boot correctly. I had assumed that I could do SuperSU or Magisk after having checked that I could boot first ... my mistake. Hope this helps someone else.

Little help stucked on OP logo at boot

Hello,
First to get this out of the way i have searched the topic and there were several "solutions" none worked for me.
How it started, I downloaded the latest LieneageOS update as always, set the phone to do it's thing, came back and the phone was stucked on OP log, tried a little reboot, nothing.
No access to recovery or fastboot.
computer wouldn't recognize device even after installing drivers, this guide helped me a little https://forums.oneplus.com/threads/...ck-guide-for-a-hard-bricked-oneplus-2.347607/
found tools got fastboot back and original recovery.
via fastboot attempted to installed TWRP
fastboot flash recovery twrp****.img
and then tried to boot into recovery
fastboot boot twrp****.img
Not able to boot into twrp
after all that my phone still stucked on the boot OP logo
any help would be greatly appreciated.
Anyone has any idea, sorry I have been scouring and reading everywhere, but I can't find a solution.
Thank you
So i have been trying many things and finally getting somewhere. I apologize for the long post, but i have been trying so many things to get this device back to speed.
So flashing TWRP newer version for some reason is not letting me boot into recovery.
I have flashed twrp-2.8.7.0 and i am able to boot into recovery, however when trying to install the ROM (LineageOS 16) i get error E3004.
Searching the web i find that the correction is to that error is to update TWRP, thus i have tried flashing
twrp-3.2.1-0 and twrp-3.1.1-0 and once installed i am not able to boot into recovery again.
I flashed 2.8.7.0 and i was able to get in, thus from inside TWRP i did an image install of twrp-3.1.1-0 and rebooted, recovery won't load. I proceeded to repeat this until i get a result.
I flashed twrp-3.0.2-0 and be able to boot. However still not able to install LOS.
Once i tried flashing twrp-3.0.2-1, recovery won't load.
For sake of argument i flashed twrp-3.0.2-0 and attempted a image install for twrp-3.0.2-1, but the system still won't boot to recovery.
I have completely formatted the phone.
I hope someone could give me a little advice . Thank you.

flashing custom rom via twrp bootloops back to fastboot

Hi, i unlocked the bootloader and flashed twrp with this tutorial:
https://forum.xda-developers.com/le...t/twrp-unofficial-twrp-lenovo-z6-pro-t4035987
Now when i install any custom rom it boot loops once and loads into fastboot.
Any idea how to fix this?
i should clarify the rom install says it succeeded but when i reboot it loads into fastboot.
after manually flashing files from the most recent stock CN rom, i was able to boot into paranoid android. no clue what exactly fixed it but whatever.

-PLEASE HELP- UNABLE TO FLASH TWRP OR ROOT

Hello
Sorry for my bad english
a few months ago, i decided to flash my first custom rom (One UI rom) and it worked fine
then i was testing a lot of other roms too until i tried lineage os 20
when i flashed lineage os 20, i decided to try another rom but i was stuck on the twrp logo screen. i tried methods of fixing it but none of them worked.
after trying a method of flashing twrp once again, it failed and i got stuck in a reboot loop and could only boot into download mode. so i booted into download mode and flashed a stock rom.
everything was working fine again until i wanted to try another custom rom. At first whenever i would flash twrp, they would always fail. but later i found the cause of that and fixed it. then, flashing twrp would always pass but my device would get stuck on a reboot loop once again and i had to flash stock rom again.
i tried rooting using auto root but it would show me a verification failed error and i had to reset my device. so now im stuck on a device which cannot flash twrp, nor can it be rooted. its been 1 month and i could not find a viable solution so any help would be extremely appreciated.
You have to just reflash your fastboot rom with fastboot mode unzip it and double click on flash_all.bat file or something like that
it is a samsung, there is no fastboot mode

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