H918 Bootlooping After Flashing KDZ - LG V20 Questions & Answers

I was on LineageOS 16 with Magisk and TWRP with software on 10T. I booted into download mode and flashed H91810t_00_0306.kdz.
After completing my phone boots up until I get to the "Android is starting..." screen. When it reaches 100% my phone reboots and the process just keeps repeating itself.
Any ideas on how to fix this? I've already tried doing a factory reset but the same process occurs.

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Samsung S5 soft bricked, flashed firmware, worked, soft bricked again

Hi, I am a noob. My Samsung S5 got stuck in a boot loop at the logo page. I flashed the firmware (G900TUVS1GPG2_G900TTMB1GPG2_G900TUVS1GPG2_HOME.tar.md5 - 6.0.1), and the problem was fixed. Then, when my battery was about to die, I turned it off and switched the battery, and it restarted in the soft brick boot loop again. I am unable to get to recovery mode unless it is charging. I tried wiping the data and cache partition, but that doesn't work. So I reflashed the firmware again, first in Odin 3.09, then in 3.11.1. It always passes in Odin, but when the phone starts to reload and load the firmware, it stops in the middle, says "erasing", and then goes back to the boot loop. Any ideas? Thanks!

Failed to mount any partition / Kernel Panic / boot loop / Galaxy S5 klte

Phone was running stock os. I rebooted my phone and it's now stuck in a boot loop. I tried to reinstall it through Smart Switch and it's still stuck in a boot loop.
After the reinstall it goes to "Installing system updates" and almost right after it stops and shows "Erasing" for a second. It then reboots a few times and it usually goes to the Kernel Panic error but it has also gone to Manual Mode once to try and install the updates but then it fails to mount any partition.
I've tried installing Lineage OS (I used it before I went back to stock os) through TWRP and I also got the same errors. I was unable to mount any partitions and left the phone without a battery for a few a day.
When I tried again just now I was able to mount the partitions but installing Lineage OS or stock OS was still not possible and it gave me the same errors again.
Is there anything I can do to fix this?
First error after boot loops: imgur.com/a/ZOTfR
Errors on TWRP: imgur.com/a/qYqsY
Manual install in recovery: imgur.com/a/YHeyS
Another error: imgur.com/a/xPHdm
EDIT: After trying for three days, it suddenly booted. I can boot to the OS but the phone still crashes and boot loops every time. If I go to recovery and wipe cache it will boot again. What can I do to stop it from crashing and going back to boot loops?

[solved] stuck on bootloop after flashing los 17

steps i did:
installed twrp twrp-3.4.0-1-markw
flashed lineage-17.1-20200920-UNOFFICIAL-markw by shiabzzz
wiped data and cache, excluding internal storage
tried to flash gaps but failed due to error 20
flashed magisk
reboot.
now im stuck on bootloop. i know i should have deleted data before flashing the rom, not afterwards. when i press power+up it's not going to recovery.
how can i fix it?
are gaps mandatory for it to boot?
will my phone turn off when it runs out of battery, will i be able to go to recovery then?
update: i can access fastboot mode, but when connecting to pc and trying to boot to recovery it says "waiting for device".

[HD1925] Issues with TWRP and FTM mode

I successfully rooted the phone and installed magisk etc. but I want to further and wanna mess around a bit. So I need TWRP to back up my everything. However, whenever I flash TWRP to both slots phone deletes OS or TWRP claims so. Therefore I flash the OS and do all the things over again and the cycle continues. What can be the cause for TWRP deleting OS or saying so. Is it can be caused I flash the wrong TWRP? I used tool all in one to only boot to twrp but it just stucks me in the fastboot logo and nothing happens for long time. I know when flash it it boots in seconds.
And for FTM mode I try to enter the ftm mode but it stucks on boot logo and doesnt bring any chinese characthers again for long time. What can be the cause?
All the helps would be appreciated,
Thanks in advance.

Unable to boot into custom recovery

I have the Nexus 7 2013 wifi edition, it's been sitting here for a bit so I decided to give it new life by flashing lineage os on it.
Well the issue starts with the recovery, when I do `fastboot boot recovery.img` nothing happens, tried both the lineage recovery and twrp.
At the top of the screen it shows `booting downloaded image`, but nothing happens, the device actually freezes.
This device is stock, updated and unlocked.
Any suggestions?
I have the same tablet and the same problem. I have also tried both the lineage recovery and twrp. It just hangs...
Help?!

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