Had just flashed the latest CM9 nightly (clean install, fresh wipe) yesterday and everything was running fine.
This morning, woke up, my phone was turned off. When powering it on it hung on the google screen. Fastboot still working, booted into recovery only to find that I would get error messages when trying to load my backs "E:unable to mount /sdcard". Apparently it also couldn't mount /data. So I was unable to flash any images or restore or boot up.
Seeing that fastboot was still working I assume I'm not bricked yet. I tried flashing a new boot and cwm recovery via fastboot - no dice. Same errors.
I don't have a recent backup of anything in sdcard, but at this point I'm willing to sacrifice it.
Found this thread http://forum.xda-developers.com/showthread.php?t=1078213
and I'm trying to follow the steps to flash back to stock GB. using the GRJ22 images
It flashed the boot and recovery without issue but seems to hang while flashing the system.img. I know it's a big file, but it was up to ~2hrs with it still transferring. I pulled the plug on it and tried again, lost patience after an hour.
Now I had the idea of maybe locking and unlocking the boot loader would help things.....not sure why I thought this. Anyway, now it seems to hang on the unlock bootloader screen.
So my question now - am I screwed?
- anything else to try?
- is it really "hanging" or do I need to give it more time?
- have I screwed myself even more by now locking my bootloader and flashing the stock recovery?
Any help would be very much appreciated....
Some new additions and new insights from the reddit android community:
- this probably has nothing to do with CM9. My phone has been wonky for about two weeks - random reboots, sometimes rebooting into recovery. That's why I thought I'd throw on the latest nightly and do a fresh wipe yesterday.
- There's definitely something up with /data. Anytime I tried wiping all/factory reset in cwm recovery I got errors about not being able to mount /data or being able to find files in /data
- basically anything I do involving /data partition causes the phone to lock-up -- flashing the boot.img and recovery img worked, but not system. Also, I think the reason I can't re-unlock the bootloader is because during the unlock process it tries to do a factory reset/data wipe
Basically I think there are two things I need to know if I can do - 1) unlock the bootloader again, via some way that won't try to reset the /data partition and thus won't freeze the phone. 2) try repartitioning /data
I really hope I didn't screw myself by locking the bootloader. I'd actually feel a lot better if it was something in my phone that just failed hardware-wise rather than something I could've fixed if I wasn't too quick to try poorly thought out ideas.....
Any help at all would be appreciated!
Possibly (and likely) a corrupted nand flash. Fairly common problem sadly. I'd say it's a good thing your bootloaders locked, no dramas sending it back to samsung. It might've been possible to reset the partitions and flash fastboot images but i don't think i've seen anyone who has done this to sort any similar problem. Hopefully your phones still under warranty
Well thank God that it turns out that I'm still on warranty.....sending the phone back to Samsung tomorrow.
Like you said, it's actually a good thing the bootloader is now locked and the stock boot img and recovery img are now back on! Hopefully this makes it more likely that they weren't turn away my phone.
I've yet to hear someone not getting work done under warranty because of an unlocked boot loader but it's always good to have it as stock as can be. Hope they don't take too long with your phone.
Harbb said:
I've yet to hear someone not getting work done under warranty because of an unlocked boot loader but it's always good to have it as stock as can be. Hope they don't take too long with your phone.
Click to expand...
Click to collapse
I bricked my nexus s 4 days before Christmas last year... and i was using a custom rom obviously with an unlocked bootloader and custom recovery image, and i handed it to vodafone, and guess what? they repaired without asking any questions, and the day before Christmas! sooo happy maybe because i was thirteen then, they didn't suspect a thing
Related
I've looked around quite a bit, but can't find anyone who has had this problem when restoring. I was trying out Paranoid Android 3.10 D2VZW on my Galaxy SIII, and decided to go back to JellyBam 8.2.0 D2VZW. Both are 4.2.2 ROMs. I rebooted into CWM Recovery, wiped data and cache (can't remember if I wiped the Dalvik), and restored my JellyBam backup. The restore went fine, and I rebooted the system from CWM...nothing! Phone is completely black, no boot up at all. I tried the power button, a battery pull, booting into recovery, and booting into download. When I plug my phone into my computer (a Mac with Windows running in Parallels), I get QHSUSB_DLOAD. So far my research tells me this means my phone is hard-bricked. If I plug in without a battery, I get a red LED light that extinguishes after a few minutes. My understanding of hard-bricking is that it's caused by flashing ROMs not intended for my phone (i.e. an international version ROM). Why would my phone hard-brick if the last thing I did is restore a backup from a previously-working ROM built for my phone? I didn't check the md5, but if the md5 failed wouldn't the restore fail too? I literally can't do anything with my phone. No display, no Odin/download, no recovery. The only indications that it isn't completely fried are the red LED and my computer recognizing the QHSUSB_DLOAD and making a notification sound when it's connected or disconnected. I have no problem sending it to be JTAGed if need be, but I'm not 100% that it's hard-bricked. Any suggestions?
ransdell2 said:
I've looked around quite a bit, but can't find anyone who has had this problem when restoring. I was trying out Paranoid Android 3.10 D2VZW on my Galaxy SIII, and decided to go back to JellyBam 8.2.0 D2VZW. Both are 4.2.2 ROMs. I rebooted into CWM Recovery, wiped data and cache (can't remember if I wiped the Dalvik), and restored my JellyBam backup. The restore went fine, and I rebooted the system from CWM...nothing! Phone is completely black, no boot up at all. I tried the power button, a battery pull, booting into recovery, and booting into download. When I plug my phone into my computer (a Mac with Windows running in Parallels), I get QHSUSB_DLOAD. So far my research tells me this means my phone is hard-bricked. If I plug in without a battery, I get a red LED light that extinguishes after a few minutes. My understanding of hard-bricking is that it's caused by flashing ROMs not intended for my phone (i.e. an international version ROM). Why would my phone hard-brick if the last thing I did is restore a backup from a previously-working ROM built for my phone? I didn't check the md5, but if the md5 failed wouldn't the restore fail too? I literally can't do anything with my phone. No display, no Odin/download, no recovery. The only indications that it isn't completely fried are the red LED and my computer recognizing the QHSUSB_DLOAD and making a notification sound when it's connected or disconnected. I have no problem sending it to be JTAGed if need be, but I'm not 100% that it's hard-bricked. Any suggestions?
Click to expand...
Click to collapse
It's definitely hard bricked, whatever happened is very strange though, as a nandroid doesn't usually mess up your boot partition.
Flashing a rom not intended for your phone can cause a hard brick, but that's not the only way it can happen. Somewhere in the restore process your boot partition got corrupted. Your base coding somehow is not being recognized, and your computer and phone can't tell what's supposed to run. A jtag is really your only option.
TWRP offers you the option to disable the boot and recovery partition when restoring. After you fix your phone, I'd recommend trying that out so you're absolutely sure your boot partition doesn't get touched. Those really don't need to be restored anyway.
Sorry that happened to you.
Sent from my SCH-I535 using Tapatalk 2
Bummer. Thanks for the input. I kinda figured that was the case, but was hoping I was missing something. Guess I'm going to have it JTAGed, probably by Mobile Tech Videos. The process looks fairly simple. If the equipment costs were comparable to having someone else do it I might do it myself, but if that were the case everyone else would be doing that too! I'll let you know how it goes.
ransdell2 said:
Bummer. Thanks for the input. I kinda figured that was the case, but was hoping I was missing something. Guess I'm going to have it JTAGed, probably by Mobile Tech Videos. The process looks fairly simple. If the equipment costs were comparable to having someone else do it I might do it myself, but if that were the case everyone else would be doing that too! I'll let you know how it goes.
Click to expand...
Click to collapse
I think the price is reasonable if you factor in equipment and labor.
Sent from my SCH-I535 using Tapatalk 2
BadUsername said:
I think the price is reasonable if you factor in equipment and labor.
Sent from my SCH-I535 using Tapatalk 2
Click to expand...
Click to collapse
Got my phone JTAGed by Patrick Walls (whose service is available on eBay for ~$35), and it works great. Fast service and great communication from Patrick. The phone came back unrooted with a stock 4.1.2 ROM. Of course I immediately re-rooted it and flashed a fresh JellyBAM ROM to it (with a huge feeling of trepidation), and so far everything is working, with the exception of the camera (I get "Can't connect to camera" after taking one picture, and a reboot is the only thing that enables the camera again, for one pictures, then can't connect, reboot, one pic, can't connect, etc.).
Having never hard-bricked before after many, many ROM changes on a Fascinate and about 10 ROM changes on my S3, I'm a little nervous about changing them now. Is my hesitation unfounded providing I don't mess with the bootchain? To root my phone I flashed the VRALEC bootchain, then TWRP, then rooted, then JellyBAM, then the VRBMD3 bootchain, as per this rooting guide:
http://forum.xda-developers.com/showthread.php?t=2046439
Now that I've put my phone back to the Jelly Bean bootchain, I should be free to flash ROMs built for my device without a serious concern about hard-bricking, right?
ransdell2 said:
Got my phone JTAGed by Patrick Walls (whose service is available on eBay for ~$35), and it works great. Fast service and great communication from Patrick. The phone came back unrooted with a stock 4.1.2 ROM. Of course I immediately re-rooted it and flashed a fresh JellyBAM ROM to it (with a huge feeling of trepidation), and so far everything is working, with the exception of the camera (I get "Can't connect to camera" after taking one picture, and a reboot is the only thing that enables the camera again, for one pictures, then can't connect, reboot, one pic, can't connect, etc.).
Having never hard-bricked before after many, many ROM changes on a Fascinate and about 10 ROM changes on my S3, I'm a little nervous about changing them now. Is my hesitation unfounded providing I don't mess with the bootchain? To root my phone I flashed the VRALEC bootchain, then TWRP, then rooted, then JellyBAM, then the VRBMD3 bootchain, as per this rooting guide:
http://forum.xda-developers.com/showthread.php?t=2046439
Now that I've put my phone back to the Jelly Bean bootchain, I should be free to flash ROMs built for my device without a serious concern about hard-bricking, right?
Click to expand...
Click to collapse
Glad you got it working.
There's always a risk of something going wrong and a hard brick reoccurring, you just had bad luck. I don't think your brick had anything to do with your bootchain.
I think what probably happened was when you made a nandroid in cwm, the boot partition somehow got corrupted. CWM by default restores your boot, recovery, data, system, and cache partitions. In the advanced restore section, you can restore one at a time but you have no way of simply disabling a particular partition from being restored. I think since the boot partition was messed up, it erased your good data and hard-bricked your phone.
TWRP by default only backs up your data, cache, and system partitions and leaves your boot and recovery partitions alone. If you restore that backup, then there's pretty much no way a hard brick can happen. I can't think of any reason why you really need to backup your recovery or boot partition.
Sent from my SCH-I535 using Tapatalk 2
BadUsername said:
Glad you got it working.
There's always a risk of something going wrong and a hard brick reoccurring, you just had bad luck. I don't think your brick had anything to do with your bootchain.
I think what probably happened was when you made a nandroid in cwm, the boot partition somehow got corrupted. CWM by default restores your boot, recovery, data, system, and cache partitions. In the advanced restore section, you can restore one at a time but you have no way of simply disabling a particular partition from being restored. I think since the boot partition was messed up, it erased your good data and hard-bricked your phone.
TWRP by default only backs up your data, cache, and system partitions and leaves your boot and recovery partitions alone. If you restore that backup, then there's pretty much no way a hard brick can happen. I can't think of any reason why you really need to backup your recovery or boot partition.
Sent from my SCH-I535 using Tapatalk 2
Click to expand...
Click to collapse
Great, thanks for the info! I'll make sure that the boot and recovery partitions aren't touched in the future. I've primarily used CWM, but am probably just going to stick with TWRP.
So i must have messed up my phone while using the all in one root unlocker and so on. Im not sure what i did, but i finally got my phone to boot, and now i get no service. Im on tmobile and it says i have no sim card. When i go into about phone it shows baseband unknown.
I really have no idea what to do. Ive never been stuck in this situation. Maybe someone more experienced can point me in the right direction?
any help would be appreciated!
aamzalag said:
So i must have messed up my phone while using the all in one root unlocker and so on. Im not sure what i did, but i finally got my phone to boot, and now i get no service. Im on tmobile and it says i have no sim card. When i go into about phone it shows baseband unknown.
I really have no idea what to do. Ive never been stuck in this situation. Maybe someone more experienced can point me in the right direction?
any help would be appreciated!
Click to expand...
Click to collapse
so furthermore, it looks like i have no data partition anymore, i can go on my chromebrowser on the phone and browse the web but when i try to install anything it says no sdcard. I also cant move anything to the phone via windows, it just freezes even tho i can see the phone and go into the internal storage.
Im really screwed here. Ive also used the fastboot files to flash back to google stock, but for some reason continue to find everything borked.
HELP PLZ!!! ahah
Also, finding that i cant mount any partition, cache, data, anything liek that. It seems like my partitions have been messed up . Not sure how to resolve that
Well it looks like your the first one to brick the nexus 5. If your imei is missing your screwed.
P.S.A DON'T USE TOOLKITS
Sent from my NEXUS 5
Might be helpful to others to explain exactly what you did to your phone.
lafester said:
Might be helpful to others to explain exactly what you did to your phone.
Click to expand...
Click to collapse
He used a tool kit. Who knows what it did to his phone
Sent from my NEXUS 5
I realize that maybe using the toolkit may not have been a good choice but considering im already here. Constructive advice might be a little more helpful... I know that with my old verizon GS3 if i lost my imei/ similar info, i could nv flash myself and get it back in certain cases. Does a similar thing not exist for the nexus 5? Id imagine that a truly unlocked device like this one should have a method to get back from anything?
aamzalag said:
I realize that maybe using the toolkit may not have been a good choice but considering im already here. Constructive advice might be a little more helpful... I know that with my old verizon GS3 if i lost my imei/ similar info, i could nv flash myself and get it back in certain cases. Does a similar thing not exist for the nexus 5? Id imagine that a truly unlocked device like this one should have a method to get back from anything?
Click to expand...
Click to collapse
If you've flashed the stick images and it hasn't fixed it then you might be out of luck. With the n4 there is a thread on how to restore the phone with LG nv flash in download mode. I don't think the tools or files are available yet for the n5 tho
Sent from my NEXUS 5
i dont know what i did, but i restored the factory image one more time, then booted to stock recovery and wiped all partitions. The phone booted and my imei and baseband are back. Working 100% now. Gonna sit out the rooting and so on for now. time to relax for a bit
So you can't fastboot flash anything? Can you fast boot flash twrp recovery from the android SDK on a PC?
Sent from my Nexus 7
aamzalag said:
i dont know what i did, but i restored the factory image one more time, then booted to stock recovery and wiped all partitions. The phone booted and my imei and baseband are back. Working 100% now. Gonna sit out the rooting and so on for now. time to relax for a bit
Click to expand...
Click to collapse
That's how I fixed my N4. I flashed the factory images 3 times.
Glad it's working finally
Sent from my Nexus 7
Ya, fastboot continued to work, and iw as able to flash the factory images.At first those werent fixing anything. the final time i flashed it right before it worked again, i let the phone sit and run the boot screen for about 30 minutes before i went to stock recovery and wiped. Then it booted perfectly.
The previous times i had flashed twrp and wiped which i believe was the cause in the first place.
Thanks all its working perfect now. The device is amazing,!
aamzalag said:
The previous times i had flashed twrp and wiped which i believe was the cause in the first place.,!
Click to expand...
Click to collapse
Sames just happened to me, but I didnt use a toolkit, i did it all manually.
Quick flash of the factory image sorted it. :victory:
UPDATE: Flashed TWRP again....All ok this time.
You guys unlocked the bootloader first right?
Sent from my SGH-I747
This has just happened to me. I have installed the stock images 2 times now.
Is there anything you guys did differently to make it work?
My N5 decided to wipe the baseband and IMEI when I went to wipe the cache through recovery. Tried to reflash factory images 5 times and each time, when the phone boots up, hangouts, camera and gallery apps force close and I still have no network signal or IMEI/baseband.
Worst bit is all I did was wipe the cache partition, done that a million times and never had this problem
Anyone know what i can do?
I've relocked the bootloader for now but I can't call Google because my only phone is the Nexus 5 so that's out of the question.
Edit:
Managed to fix it by using a slightly different set of fastboot commands.
Here's what I did:
adb reboot bootloader
fastboot flash bootloader bootloader-hammerhead-HHZ11d.img
fastboot reboot-bootloader
fastboot flash radio radio-hammerhead-M8974A-1.0.25.0.17.img
fastboot reboot-bootloader
fastboot -w update image-hammerhead-krt16m.zip
fastboot reboot-bootloader
That worked for me
WRAITH07 said:
My N5 decided to wipe the baseband and IMEI when I went to wipe the cache through recovery. Tried to reflash factory images 5 times and each time, when the phone boots up, hangouts, camera and gallery apps force close and I still have no network signal or IMEI/baseband.
Worst bit is all I did was wipe the cache partition, done that a million times and never had this problem
Anyone know what i can do?
I've relocked the bootloader for now but I can't call Google because my only phone is the Nexus 5 so that's out of the question.
Click to expand...
Click to collapse
After you flash the factory image, boot into recovery and do a factory reset.
You mentioned a cache wipe. Was this in CWM or TWRP? My N5 hung trying to do a cache wipe in CWM. After rebooting the sdcard was inaccessible. The solution was to flash TWRP from fastboot, and do an advanced wipe of only the cache, and give it TIME. Like 5-10 minutes. After another reboot I had the sdcard and radio back, but some write permission issues. One more reboot and everything was ok again.
Sent from my Nexus 5 using Tapatalk
cmstlist said:
You mentioned a cache wipe. Was this in CWM or TWRP? My N5 hung trying to do a cache wipe in CWM. After rebooting the sdcard was inaccessible. The solution was to flash TWRP from fastboot, and do an advanced wipe of only the cache, and give it TIME. Like 5-10 minutes. After another reboot I had the sdcard and radio back, but some write permission issues. One more reboot and everything was ok again.
Sent from my Nexus 5 using Tapatalk
Click to expand...
Click to collapse
I had this issue while wiping cache in TWRP 2.6.3.0
Sent from my Nexus 5 using Tapatalk
Like the title says, I'm stuck at the erasing 'userdata' part of flashing back to stock.
I'm following the information from http://forum.xda-developers.com/showthread.php?t=2513701
I chose to use method 1, since i'm lazy and just want the new 4.4.1. Everything was going well until that part. Please help, I don't want to brick my phone by doing something stupid like unplugging it.... Unless that'll work.
also the little android with the ! is not present. The screen still shows the large android with blue squares inside. I also did not factory reset before i tried to do this.
datboyc said:
Like the title says, I'm stuck at the erasing 'userdata' part of flashing back to stock.
I'm following the information from http://forum.xda-developers.com/showthread.php?t=2513701
I chose to use method 1, since i'm lazy and just want the new 4.4.1. Everything was going well until that part. Please help, I don't want to brick my phone by doing something stupid like unplugging it.... Unless that'll work.
Click to expand...
Click to collapse
formatting partitions can take ages on this phone. i stopped mid-format on cache with an early version of TWRP a couple of weeks ago and it's taken the best part of a day yesterday to sort it out - i couldn't even flash kernels or boot animations without bootloop (on the second boot? wtf??), and ended up going back to stock, locking the bootloader and repeatedly formatting all partitions to sort it! (it might be worth locking and unlocking the bootloader before you put your data back since you're there anyway....)
Well I decided to be brave and boot from TWRP recovery, but when I unplugged the phone ADB showed an error saying "Too many open files in system". The phone then rebooted on its own, and the little android with the ! came up, and the process seems to have worked. Thank you for the information about taking forever on the formatting, I will keep that in mind when I flash a custom recovery again.
I know its a little outdated, but i had the same problems few days ago, and i solved the problem using a pc in windows xp and everything went great, but in Windows 7 everytime got stuck at erasing userdata.
Permission issue fixed!
To all of you that have permission issues, problems etc. check out this on youtube!
[Tutorial] How to Flash ASUS Zenfone 5 CN/TW to WW Firmware [EN]
This made a huge difference on my phone. Phone is much smoother than before and now my speaker has started working again.
Took some time to get it done (couple of hours) but it was worth it!
If you encounter any problems, just read the comments.
huh???
"How to flash Asus Zenfone 5"???
What??
ffs.
Hello,
Since yesterday my phone is crashing about 20-30 seconds after properly booting. I can unlock the phone with my lockscreen pattern, I land on my homescreen but process like Google Play Services goes like "x has stopped working".
On CWM I've erased /system and /data and then reflash a rom (Slimkat or CM), Erasing and flashing process on CWM seems to work as planned but when the phone reboot it's still on Slimkat with all my datas, like if nothing have been done in CWM.
So I've rebooted on the bootloader and tried a "fastboot -w", again the process seems to be ok on my pc but when the phone reboot it is still on this f**ked rom with all my datas, like if fastboot have done nothing.
I've tried to flash an up-to-date CWM, same thing again.
I think the eMMC chip are deeply corrupted, they say any writing on it is ok but in fact they are read-only, which may explain why all the process are crashing after the boot and why flashing seams ok but are useless.
What do you think XDA, andy idea about my problem ? Do you think it's an Hardware issue or what can I do to solve it ?
Why not flashing a stock firmware to go back to STOCK?
joel_sinbad said:
Why not flashing a stock firmware to go back to STOCK?
Click to expand...
Click to collapse
I've tried it with RSDLite but same thing again, everyhing seams ok in RSDLite, the 22 blocks are writed but at the reboot it's still the same Slimkat with my datas.
Ezekiel3 said:
I've tried it with RSDLite but same thing again, everyhing seams ok in RSDLite, the 22 blocks are writed but at the reboot it's still the same Slimkat with my datas.
Click to expand...
Click to collapse
if infact it has gone read only as has happened to some other users, there is no known fix. all known angles have been explored, even with input from a developer.
if you find a fix, post it, it may help others.
most likely, you will need a new phone.
I agree with bwen diord...aint never see anyone recover from that, least not yet.
cmh714 said:
I agree with bwen diord...aint never see anyone recover from that, least not yet.
Click to expand...
Click to collapse
I've just see it's possible to boot from the SD card in that case but I'm to lazy to try it.
Goodbye little RAZR HD, we have covered a lot of mileage together, it's time to leave. :angel:
Anyway thanks for the help XDA
I have a well and heavily used Galaxy S5 (GM-900P) and about 2 months ago it started accting up pretty hard. Becoming very very slow so I decided to update to the latest sprint firmware and install a new(er) rom ([ROM][QD1][6.0.1]14Dec2017] Stock-ish Plus Tidbits and Magisk) and all was good for about 5 days and the phone started having apps crash/force close like crazy and most the time just reinstalling them would fix it but a bunch of google play services would crash and would have to uninstall the updates then it would work again for a day or so, sometimes it would randomly restart and get stuck at the boot screen and the phone would get crazy hot and the only way out of it was to boot into the recovery and then reflash the stock firmware in odin again then reinstall the rom. Then I had my phone all of a sudden act like there was no sim card in it and originally though it was a sim card issue but turns out it wasnt, I had to boot into the recovery and do a full wipe of everything reflash the stock firmware yet again and then reinstall the rom again. That happened twice in a matter of a week. At my wits end I decided to give LineageOS v16 a try so I boot into recovery, do a full wipe, boot into download mode, flash the latest stock firmware in odin, then boot right to recovery, flash LineageOS 16.0 then latest Magisk and all was great, for about a week, then Google services start crashing again and random apps crash over and over and even times the phone would slow down and reboot, get stuck at the boot screen and then eventually just reboot back into recovery by itself after failing to boot. But with LineageOS at least just reflashing the rom in the recovery will let it boot right back up sometimes and work as it should for another few days, other times too much stuff will just keep crashing so I do a full wipe and reflash LineageOS and all will be great for another few days to a week and it starts all over again. Its like stuff just randomly gets corrupted on the device and the only way out of it is to reflash the whole thing and start over and enjoy it until it does it again. Sometimes it will go days, sometimes a day later its all screwy again.
Also, TWRP always fails when I try to do a back up and it seems to always fail when in the data or data/private-app part of the system and its never at the same point.
I guess my question here is, could the onboard flash (the motherboard/logic board) be taking a crap on me? I really really dont want to give up on this phone just yet as it has everything I want in a phone and frankly, I just really really like it. I can get a new (used) motherboard for like $20 but even that kind of worries me cause I dont want to possibly be in this same position 3 months later again. I have a Galaxy S8+ (unlocked AT&T phone) that I refuse to use yet just cause I can not root it or unlock the bootloader.
Any help or ideas would be much appreciated and sorry for the long winded post.
could be wrong, on this one, But.....
If it was mew, I would go to stock . run that for a day, maybe 3... if all it well, then flash over what ever Rom you would like.
"KNOWING IT Work" is the key. Oh, another thing, that may help too . seen this on one of the LineageOS 15.1 or 16 is when you wipe ... System and Data, can be Reformatted, they have had some major success by also formatting it, (YES EXT4) but this will help to ensure nothing left over....
May even help with others Android 8.0, 8.1, 9.0....
Well, I have a new motherboard on the way so we'll see how that goes but I did manage to get the stock firmware on there and booted then I reflashed TWRP and then Magisk and going to just run it that way for a bit and see what happens.
I initially went in to TWRP, wiped data,system, etc... then flashed the stock firmware in Odin, then rebooted, got stuck at the Samsung boot logo so pulled the battery, booted to stock recovery, did a factory reset (Wiped everything, internal sd card included), then got it to boot, set the phone up, then rebooted to download mode, flashed TWRP, then rebooted again, set the phone up a bit more then decided to flash Magisk so I have root, and so far its working. 100% stock with magisk. Fingers crossed.
I still think there is an issue with the internal flash memory though as I can not get a TWRP backup to actually complete without failing. It always fails when backing up stuff in the data partition/section and never at the same point like its having read errors or something. I'll grab a TWRP log and post it up in a bit.
Well, that didnt last long. Within an hour, apps started crashing. I will make this thing work! LoL