Help PLease - General Questions and Answers

Hi,
I recently got custom rom- cm13 on my note 8.0 Gt-N5100. I wasnt able to use snapchat so I decided to use magisk,
I installed the magisk manager and it wouldnt open up and all my apps didnt respond. After a lot of reading articles and stuff i flashed the magisk zip through TWRP but nothing happened, I then flashed Super Su zip and now i am in this situation where The marshmallow boot screen just keeps popping up (i guess that is what is called as boot loop).I cant go pass the marshmallow loading screen. I wiped dalvik cache and did factory reset through TWRP. Is there anything I can do about this, PLz help.

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Issues flashing CM13. Phone keeps rebooting once it gets to CM splash screen

Ok... slightly frustrated here.
Basic issue: Have flashed CM13 (Nightly 5.17.16) along with the latest Gapps. Upon reboot my phone will go to the Cyanagenmod splash screen, appear to load for several seconds, and then restart. It keeps doing this for at least 10 minutes until I turn it off. I have re-flashed a couple times after reloading the backup but no change.
Process I used: First of all my phone already has Android 6.0.1 firmware installed (not sure if that's an issue). I have TWRP setup as recovery and rooted with su 2.52 (and yes I verified the root prior to flashing). To flash I boot into recovery (obviously), factory reset, install cm13, clear dalvik, and repeat process with gapps. I've done this before with older CM's successfully but for some reason I can't get past the CM splash screen.
Any assistance is appreciated. If I have made a completely stupid error in my process or this exact issue is covered in another thread don't hesitate to point that out!!
Thank you in advance.
i was getting the same thing on my 1st flash into 13 from moar rom 7.0 but did some reseach and fixed it by wiping the dalvik and cache before the flash and then installed cm13 and then the gapps 6.0 stock all in twrp and fyi you dont need super su just unlock the developer mode and go to the bottom and turn on root access it made me crash my system after i installed new supersu hope these helps
you dont want to be on a MM baseband. Flash a LP tar.md5 in odin and reinstall CM13

[R7SF] Stuck in TWRP Recovery mode only, flashed rom but unable to boot into it.

After flashing TWRP and being successful, i installed LineageOS 14.1 and gapps as you have guided on your posts, i saw that there were some old folders that were left over from the many apps my wife have installed previously, so i decided to do a factory reset. After pressing factory reset, the phone restarted and booted into TWRP recovery, which then i clicked on "Format Data" from the wipe tab.
Things went really south from here on, i am unable to boot into anything i have flashed (i tried flashing LineageOS 14.1 and gapps). Once the rom and gapps are installed, the phone reboots back into TWRP again. it seems like the internal storage of the phone is still empty except with the 2 zip files i've put in. I am able to access TWRP Recovery and detect it as a R7S on my computer, but i cannot boot into anything else, its been stuck like that booting ONLY into TWRP ever since i've pressed "Format Data" which in this case is my mistake and i apologize, is there any solutions to unbrick the phone? Could anyone please help me? I would be very very thankful.
Edit: I have flashed a newer TWRP via TWRP itself under Install > install image. previously running on 3.0.2-2-r7sf-final.img but i tried downloading from TWRP website twrp-3.1.0-0-r7sf.img and flashed it vi TWRP since i cannot get into fastboot. phone booted up after wards into OS and made backups and kept it somewhere safe. was reading and panicking around the web for a good 10 hours

No ROM installed, can't boot into TWRP, cant use fastboot.I dont know what else to do

I was using RR Nougat for almost 1.5 year, it wasnt that stable but it was ok, but today I got stuck in a bootloop for no reason.
I tried reflashing the ROM and nothing. I wiped dalvik/cache bla bla still nothing. So I backup up everything through Tuga TWRP and then proceeded to wipe everything besides Internal storage.
I tried to install RR 6.1.0 but I had a problem installing Gapps(error 139??), so I proceeded to install TWRP-k2 and then everything went to hell. I had EFIDROID installed which is extremely buggy and now it wont enter into TWRP because of efidroid and its ramdisk errors. I have no way to uninstall Efidroid and no way to install anything else.
What is the procedure to make my phone working again? How do I Install a new ROM and TWRP and Gapps through fastboot?
Edit: Update: After following the steps in this thread https://forum.xda-developers.com/oneplus-one/help/fix-brickloop-audio-fx-fc-efs-corrupt-t2879061 it now looks like my phone is completely and utterly bricked. It won't turn on and no button combination works. Ideas?
https://forum.xda-developers.com/oneplus-one/general/guide-unbrick-oneplus-one-t3013732

Custom Roms seem to not work on my rmx1971 (realme 5 pro)

am i doing something wrong with the process?
i successfuly unlocked bootloader, flashed twrp with no issue i tried 2 custom roms but non seems to work.
first i tried havoc 2.9, it booted, done my preferred settings, flashed magisk 20.1 all working fine. but when i restart my device i came across this "phone is starting...." prompt and it really takes a long time still nothing happens, go back to recovery again, wiped data, dalvik cache, cache, even formatted it and still nothing. so i tried pixel experience android 10, again it booted up but i cant pass through the initial settings/setup it loops to google pixel boot logo, tried formatting again and wiping caches, nothing new happened. anyone experiencing these issues? help me please.
You're doing something wrong I'm sure of it. I just don't know exactly what. Anyway. There's a Rui c03 firmware flash able zip on these forums somewhere. After doing a full wipe in TWRP do this: Flash the firmware, flash latest Pixel Experience then Magisk 20.4. Should work fine. If stuck on logo boot back to TWRP then format data, reboot.
i will try that another time, for now i settled with magisk patched boot on stock rom

Swiped right on NO OS INSTALLED

Hi there,
I was trying to install Lightheart 1.0 OS in my SM-G930F after having LineageOS 17.1 installed for some time. I flashed the ROM and also Magisk (although I couldnt flash Gapps as Error 20 appeared). Both the ROM and Magisk seemed to flash ok. After doing all of that, I went on and, although I saw the message of NO OS INSTALLED, I swiped right as for some reason I though that it was gonna be installed anyway (or smth, idk too much about this :silly:.
Now the phone is stuck on the initial loading SAMSUNG GALAXY S7 page, without TWRP access nor download mode access (prior to flashing, I erased DALVIK, CACHE, DATA and SYSTEM). I have tried to flash TWRP with odin, but as there is no download mode access, I had no luck.
I´m reading more about what could I do, however right now I´m a bit lost and I dont know what are my options.
I would greatly appreciate any help or advice. Thanks.
EDIT: no need of help anymore.

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