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[Solved] Boot loop and can't get into recover mode

Hi, I was on CleanRom 5.1, flashed to ViperXL 3.1, but then I flashed back to CleanRom, and now my phone wont boot pass the "X" nexus logo. I hold down "power+volume", but it restarted the phone and repeated the same boot loop. What can I do to solve this? Thank you very much.

Did you full wipe?

1. Did you unlock your bootloader?
2. Power off your phone completely, and then hit the power+volume keys to turn it on and into recovery, sometimes it works better that way

Deleted read again just full wipe

Ok. I got it to boot into recover mode. FYI, my HBoot is 1.09. I can't find the Custom Roms file on my phone any more. What can i do to install a custom rom now?
Did you full wipe?
Click to expand...
Click to collapse
Yes, I believe I did a full wipe.
Did you unlock your bootloader?
Click to expand...
Click to collapse
Yes, I did
did you flash your boot img for viper through fastboot?
Click to expand...
Click to collapse
No, I did not flash a boot.img for viper.

tonie972 said:
Ok. I got it to boot into recover mode. FYI, my HBoot is 1.09. I can't find the Custom Roms file on my phone any more. What can i do to install a custom rom now?
Yes, I believe I did a full wipe.
Yes, I did
No, I did not flash a boot.img for viper.
Click to expand...
Click to collapse
Did you have twrp recovery?

tactical kitten said:
Did you have twrp recovery?
Click to expand...
Click to collapse
Yes

tonie972 said:
Yes
Click to expand...
Click to collapse
Well wipe system factory reset wipe caches than flash again

tactical kitten said:
Well wipe system factory reset wipe caches than flash again
Click to expand...
Click to collapse
How do I move the rom into the SD?

tonie972 said:
How do I move the rom into the SD?
Click to expand...
Click to collapse
What version of twrp r u on? But you should be able to mount storage in twrp

TWRP 2.3.1 - Format the SD and transferring Rom to SD. How do I flash the boot.img via fastboot?

What i always do and dont even care about if im flashing the same rom or a new is this:
Wipe Data/Factory Reset
Wipe System / Dalvik Cache / Cache
Flash boot.img
Flash ROM
Flash Gapps
Wipe Cache / Dalvik Cache
Reboot
It doesnt take you a lot of time and its going to work prety much every single time

You don't have to you're on hboot 1.09 ...but in clean roms aroma make sure you say to install boot img

well thats the point with all the roms that are out there haha you clean everything, always flash the boot.img, so you will never have to worry about if its gonna bootloop because of a different kernel or another file from another rom, the peace of mind of knowning your device its fully clean, besides it takes like 10 seconds more to do that

tried it again and it worked! thank you all!

pikul said:
well thats the point with all the roms that are out there haha you clean everything, always flash the boot.img, so you will never have to worry about if its gonna bootloop because of a different kernel or another file from another rom, the peace of mind of knowning your device its fully clean, besides it takes like 10 seconds more to do that
Click to expand...
Click to collapse
When you wipe system in pretty sure it wipes kernel so no harm he diesnt have to go through the hassle of fastboot

tactical kitten said:
When you wipe system in pretty sure it wipes kernel so no harm he diesnt have to go through the hassle of fastboot
Click to expand...
Click to collapse
If you are on hboot<1.14, boot.img will be flashed automatically. So I agree that flashing boot.img "just in case" is pointless.
System always gets wiped when flashing the ROM, so again it doesn't need to be done separately.
---------- Post added at 02:12 PM ---------- Previous post was at 02:08 PM ----------
tonie972 said:
I hold down "power+volume", but it restarted the phone and repeated the same boot loop.
Click to expand...
Click to collapse
Unless you have a corrupt hboot, not being able to get into hboot is almost always a matter of pilot error.
People simply don't get the button sequence right. Hold volume down and keep holding it. Press power button for 3 seconds and release. Or if its stuck powered on on the splash screen, press power until the capacitive keys flash and the phone reboots. Keep holding volume down rocker until white hboot screen comes up. I think most people think you release power and vol down at the same time.

[Q] Is 4.4.4 worth updating to?

From what I understand it is just security fixes and no bug fixes? Is it worth flashing a new ROM for? I am on 4.4.3 right now and it is running pretty smooth.

jedinegotiator said:
From what I understand it is just security fixes and no bug fixes? Is it worth flashing a new ROM for? I am on 4.4.3 right now and it is running pretty smooth.
Click to expand...
Click to collapse
If you're on the stock ROM I don't see why you're even hesitant to simply flash the new factory images.
If you're on a custom ROM it'll get updated in a day or so, if not, then already.
Everything will run smooth regardless unless you mess up something really badly..
Sent from my Nexus 5

Lethargy said:
If you're on the stock ROM I don't see why you're even hesitant to simply flash the new factory images.
If you're on a custom ROM it'll get updated in a day or so, if not, then already.
Everything will run smooth regardless unless you mess up something really badly..
Sent from my Nexus 5
Click to expand...
Click to collapse
I'm on Kangakat but I don't like to dirty flash

jedinegotiator said:
I'm on Kangakat but I don't like to dirty flash
Click to expand...
Click to collapse
I dirty flash my new builds over my old almost daily and nothing bad has come out of it. The only reasons you would really need to clean flash is to start fresh, test out a new ROM, jump a whole android version (4.4.3 to 4.4.4 is minor.. I mean like Jellybean to KitKat), or if something isn't working properly.
Sent from my Nexus 5

Lethargy said:
I dirty flash my new builds over my old almost daily and nothing bad has come out of it. The only reasons you would really need to clean flash is to start fresh, test out a new ROM, jump a whole android version (4.4.3 to 4.4.4 is minor.. I mean like Jellybean to KitKat), or if something isn't working properly.
Sent from my Nexus 5
Click to expand...
Click to collapse
I am using xposed framework and gravity box. Will I have to reconfigure those if I dirty flash or will everything stay in tact?

jedinegotiator said:
I am using xposed framework and gravity box. Will I have to reconfigure those if I dirty flash or will everything stay in tact?
Click to expand...
Click to collapse
You'll just have to go into Xposed Installer and install the framework again, your stuff will stay.
Seeing as KangaKat is hardly a custom ROM and more of just a few minor mods on the stock ROM with Xposed thrown on top of it (lol).. I doubt you'll run into any issues.
As always, make a backup just in case.
Sent from my Nexus 5

jedinegotiator said:
From what I understand it is just security fixes and no bug fixes? Is it worth flashing a new ROM for? I am on 4.4.3 right now and it is running pretty smooth.
Click to expand...
Click to collapse
what kind of a question is this?
Ask yourself: Is security something that matters for you? If not well its not worth.
Creating a thread for this seams pointless.

Im still on 4.4.2 and with a stock rom but custom recovery and root, Is there a way to flash the 4.4.3 / 4.4.4 w/o wiping ? Can you guys link me to a guide or provide steps

EarlZ said:
Im still on 4.4.2 and with a stock rom but custom recovery and root, Is there a way to flash the 4.4.3 / 4.4.4 w/o wiping ? Can you guys link me to a guide or provide steps
Click to expand...
Click to collapse
You can extract the zip and flash the system, kernel, radio, and cache partitions separately using fastboot without overwriting your data partition.

BirchBarlow said:
You can extract the zip and flash the system, kernel, radio, and cache partitions separately using fastboot without overwriting your data partition.
Click to expand...
Click to collapse
How do I exactly flash those individually? I've used the guide in your signature before but thats to flash everything back to stock. Im not familiar with the commands to type, or maybe theres like a 4.4.4 with those mentioned that can be flashed via TWRP ?

EarlZ said:
How do I exactly flash those individually? I've used the guide in your signature before but thats to flash everything back to stock. Im not familiar with the commands to type, or maybe theres like a 4.4.4 with those mentioned that can be flashed via TWRP ?
Click to expand...
Click to collapse
This will do it for you.
http://forum.xda-developers.com/showthread.php?p=53532631
Or fastboot flash the system, cache, radio, and boot images
Sent from my Nexus 5 using XDA Free mobile app

jd1639 said:
This will do it for you.
http://forum.xda-developers.com/showthread.php?p=53532631
Or fastboot flash the system, cache, radio, and boot images
Sent from my Nexus 5 using XDA Free mobile app
Click to expand...
Click to collapse
Thanks, Grabbing it now!

EarlZ said:
Thanks, Grabbing it now!
Click to expand...
Click to collapse
Or just grab the 4.4.4 zip and flash it in recovery, ie dirty flash.

Lokke9191 said:
Or just grab the 4.4.4 zip and flash it in recovery, ie dirty flash.
Click to expand...
Click to collapse
Wont that delete my data?

You won't lose any data, just flash the 4.4.4 zip in your custom recovery. Don't wipe cache or dalvik. The zip can be found here.
http://forum.xda-developers.com/google-nexus-5/development/rom-stock-4-4-3-ktu84m-odex-deodex-t2771010

Update without losing anything
http://nexus5.wonderhowto.com/how-t...ndroid-4-4-3-without-losing-any-data-0155334/
Sent from my Nexus 4 using XDA Free mobile app

[SOLVED] How to soft-unbrick OnePlus One with no Nandroid? (page 3)

I have rooted my OnePlus One a few days back. There was an update to 11.0-XNPH30O. When I hit the install button, it redirects me to the Team Win recovery mode. Then when I hit reboot, system. It still says "An update is available for your system" Do I have to flash a newer ROM? I'm sorry, I am really new to this as this is my first android phone, what are the precautions and pre-requisites I have to do? Will this wipe my phone? Do I have to manually wipe it? I'm sorry for these questions..
Thank you in advance.

skyhonor said:
I have rooted my OnePlus One a few days back. There was an update to 11.0-XNPH30O. When I hit the install button, it redirects me to the Team Win recovery mode. Then when I hit reboot, system. It still says "An update is available for your system" Do I have to flash a newer ROM? I'm sorry, I am really new to this as this is my first android phone, what are the precautions and pre-requisites I have to do? Will this wipe my phone? Do I have to manually wipe it? I'm sorry for these questions..
Thank you in advance.
Click to expand...
Click to collapse
Did you check the current build on the phone, because there are two OTA's (one major and one minor). if you see 30O build on your about settings and yet you see an update available it is the small update. if you are still on 25R go to developer options and uncheck "update CM recovery" and try to do the OTA update again.

vamshi88 said:
Did you check the current build on the phone, because there are two OTA's (one major and one minor). if you see 30O build on your about settings and yet you see an update available it is the small update. if you are still on 25R go to developer options and uncheck "update CM recovery" and try to do the OTA update again.
Click to expand...
Click to collapse
I am still on 25R, the update CM Recovery option was unchecked and when I went to install update, it says XNPH30O Incremental. I press install update and it boots me to the TeamWin recovery

skyhonor said:
I am still on 25R, the update CM Recovery option was unchecked and when I went to install update, it says XNPH30O Incremental. I press install update and it boots me to the TeamWin recovery
Click to expand...
Click to collapse
why not just sideload the incremental. you can find the zip here.
http://forum.xda-developers.com/oneplus-one/general/cm-11s-30o-ota-slowly-rolling-t2844689

vamshi88 said:
why not just sideload the incremental. you can find the zip here.
http://forum.xda-developers.com/oneplus-one/general/cm-11s-30o-ota-slowly-rolling-t2844689
Click to expand...
Click to collapse
Will I have to wipe my phone first? I don't want to wipe it though.

skyhonor said:
Will I have to wipe my phone first? I don't want to wipe it though.
Click to expand...
Click to collapse
No you dont have to wipe anything(if you are on stock 25R), all apps and settings will be intact. Also did you make any changes like to mixer xml or lockscreen or anything else? you have to revert back to old ones or else the installation will fail.

vamshi88 said:
No you dont have to wipe anything(if you are on stock 25R), all apps and settings will be intact. Also did you make any changes like to mixer xml or lockscreen or anything else? you have to revert back to old ones or else the installation will fail.
Click to expand...
Click to collapse
I don't think so, but I did install nova theme and widgets, franco.kernel, smoothscrolling mod, and the 1+Volume Increase, will this affect anything? What is the difference between stock 25R and twrp? (I used twrp to root my phone) Also, what do you mean by "or else the installation will fail?" does that equal bricking phone or there will be a message that says "the installation has failed."
Thanks.

skyhonor said:
I don't think so, but I did install nova theme and widgets, franco.kernel, smoothscrolling mod, and the 1+Volume Increase, will this affect anything? What is the difference between stock 25R and twrp? (I used twrp to root my phone) Also, what do you mean by "or else the installation will fail?" does that equal bricking phone or there will be a message that says "the installation has failed."
Thanks.
Click to expand...
Click to collapse
the "franco.kernel, smoothscrolling mod, and the 1+Volume Increase" are mods so you will have to revert back to stock. if you dont want to/know how to revert back to stock then this thread can help you.
http://forum.xda-developers.com/oneplus-one/general/ota-8-17-cm11sfixed-zip-ota-to-stock-t2845075
Before you do anything read step 6 in this post just to understand what you are doing.
http://forum.xda-developers.com/oneplus-one/general/guides-bacon-timmaaas-how-to-guides-t2839471
after reading the thread if you need any help let me know.

vamshi88 said:
the "franco.kernel, smoothscrolling mod, and the 1+Volume Increase" are mods so you will have to revert back to stock. if you dont want to/know how to revert back to stock then this thread can help you.
http://forum.xda-developers.com/oneplus-one/general/ota-8-17-cm11sfixed-zip-ota-to-stock-t2845075
Before you do anything read step 6 in this post just to understand what you are doing.
http://forum.xda-developers.com/oneplus-one/general/guides-bacon-timmaaas-how-to-guides-t2839471
after reading the thread if you need any help let me know.
Click to expand...
Click to collapse
I have read it but it kind of confuses me a bit.
I have already flashed the META-INF.zip, so I'm guessing all the mods I put should be gone now.
Now I'm wondering, can I just transfer the cm-bacon-d22b777afa-to-0428073396-signed.zip (113mb file) to the phone and install it using TeamWin? After I reboot and power off/and power back on. then transfer the cm-bacon-0428073396-to-4f280f505a-signed.zip (8.12mb file) to the phone and install it using TeamWin.
Will this work too? Thank you for helping, really means a lot.

skyhonor said:
I have read it but it kind of confuses me a bit.
I have already flashed the META-INF.zip, so I'm guessing all the mods I put should be gone now.
Now I'm wondering, can I just transfer the cm-bacon-d22b777afa-to-0428073396-signed.zip (113mb file) to the phone and install it using TeamWin? After I reboot and power off/and power back on. then transfer the cm-bacon-0428073396-to-4f280f505a-signed.zip (8.12mb file) to the phone and install it using TeamWin.
Will this work too? Thank you for helping, really means a lot.
Click to expand...
Click to collapse
Before you do anything Take a Nandroid back up, so that if anything goes bad you can just restore.
OK. Just download this zip and flash it using TWRP(since the post says you can do it without sideload).
https://docs.google.com/file/d/0BzgUrWZ7XZ0rcDA2YVZLZUY0YkU/edit
after this is flashed just reboot the device and go to developer options uncheck "update CM recovery" then go to "about" and look for update and it will be installed with no problems.
****NOTE****
If you run into a bootloop. Wipe both caches and try flashing again. If you get any FC then try setting permissions with another cache wipe.

vamshi88 said:
Before you do anything Take a Nandroid back up, so that if anything goes bad you can just restore.
OK. Just download this zip and flash it using TWRP(since the post says you can do it without sideload).
https://docs.google.com/file/d/0BzgUrWZ7XZ0rcDA2YVZLZUY0YkU/edit
after this is flashed just reboot the device and go to developer options uncheck "update CM recovery" then go to "about" and look for update and it will be installed with no problems.
****NOTE****
If you run into a bootloop. Wipe both caches and try flashing again. If you get any FC then try setting permissions with another cache wipe.
Click to expand...
Click to collapse
It said sideloading 100% in the command prompt (PC. But It says sideload failed on the phone, I will try flashing it using TWRP, a bit later. Thank you for helping.

vamshi88 said:
Before you do anything Take a Nandroid back up, so that if anything goes bad you can just restore.
OK. Just download this zip and flash it using TWRP(since the post says you can do it without sideload).
https://docs.google.com/file/d/0BzgUrWZ7XZ0rcDA2YVZLZUY0YkU/edit
after this is flashed just reboot the device and go to developer options uncheck "update CM recovery" then go to "about" and look for update and it will be installed with no problems.
****NOTE****
If you run into a bootloop. Wipe both caches and try flashing again. If you get any FC then try setting permissions with another cache wipe.
Click to expand...
Click to collapse
I ran into a bootloop like you predicted, how do I wipe both caches?

skyhonor said:
I ran into a bootloop like you predicted, how do I wipe both caches?
Click to expand...
Click to collapse
In TWRP go to WIPE>Advanced Wipe, in there check cache and Dalvik cache and swipe to wipe and reboot.

vamshi88 said:
In TWRP go to WIPE>Advanced Wipe, in there check cache and Dalvik cache and swipe to wipe and reboot.
Click to expand...
Click to collapse
It's not a bootloop the CM gear icon just keeps on spinning. How long do I have to wait? It's been spinning for a while now.

skyhonor said:
It's not a bootloop the CM gear icon just keeps on spinning. How long do I have to wait? It's been spinning for a while now.
Click to expand...
Click to collapse
TeamWin is still accessible though. I guess I'll have to Factory reset.

skyhonor said:
It's not a bootloop the CM gear icon just keeps on spinning. How long do I have to wait? It's been spinning for a while now.
Click to expand...
Click to collapse
it shouldn't take long, leave it for 10mins. if it is still stuck hold the power button for 10 sec or untill the screen goes off then hold power + volume down button untill 1+ logo appears then clear the caches as said above.

vamshi88 said:
it shouldn't take long, leave it for 10mins. if it is still stuck hold the power button for 10 sec or untill the screen goes off then hold power + volume down button untill 1+ logo appears then clear the caches as said above.
Click to expand...
Click to collapse
Okay I will come back in 10 minutes.

skyhonor said:
Okay I will come back in 10 minutes.
Click to expand...
Click to collapse
It has been over 15 minutes... I think I'm experiencing what is called a soft brick? What can I do. I'm somewhat in panic mode.:crying:

skyhonor said:
It has been over 15 minutes... I think I'm experiencing what is called a soft brick? What can I do. I'm somewhat in panic mode.:crying:
Click to expand...
Click to collapse
did you power it off as i said.

vamshi88 said:
did you power it off as i said.
Click to expand...
Click to collapse
yes device is powered off now. I didn't do a Nandroid backup because I have titanium backup.

should i install franco kernel?

new to android,
got a few questions regarding franco kernel
1. should i install franco kernel? iam seeing that pretty much everyone is using it.will just installing it improve battery life? or do i also need to mess with clocks( which i rather not do)
2. using mahdi rom, will it work with it?
http://forum.xda-developers.com/oneplus-one/orig-development/kernel-franco-kernel-r1-t2800871
3. also i would need to download from the link that says: "for aosp roms" right?
4. in the link above it just says flash it, but in this guide http://forum.xda-developers.com/oneplus-one/general/guides-bacon-timmaaas-how-to-guides-t2839471 , in part 6, it says also wipe cache/dalvik, so should i wipe or not?
thanks in advance to all helpers =P

DjDafiDak said:
new to android,
got a few questions regarding franco kernel
1. should i install franco kernel? iam seeing that pretty much everyone is using it.will just installing it improve battery life? or do i also need to mess with clocks( which i rather not do)
2. using mahdi rom, will it work with it?
http://forum.xda-developers.com/oneplus-one/orig-development/kernel-franco-kernel-r1-t2800871
3. also i would need to download from the link that says: "for aosp roms" right?
4. in the link above it just says flash it, but in this guide http://forum.xda-developers.com/oneplus-one/general/guides-bacon-timmaaas-how-to-guides-t2839471 , in part 6, it says also wipe cache/dalvik, so should i wipe or not?
thanks in advance to all helpers =P
Click to expand...
Click to collapse
1. Depending on your device, and your app set up, it will make your device run smoother. But then there's ak kernel too. ak has more options and you have to tweak your own set up. Franco has his set up built into the kernel already to make it run optimized.
2. Yes
3. Yes
4. Yes

dude i just installed it and the screen was freaking out, like alot of random colors on parts of the screen and weird lines and sh!t, wtf, what do i do?

Update your ROM.

DjDafiDak said:
dude i just installed it and the screen was freaking out, like alot of random colors on parts of the screen and weird lines and sh!t, wtf, what do i do?
Click to expand...
Click to collapse
You downloaded the outdated Mahdi, download the latest from here
http://forum.xda-developers.com/one...m-2-7-oneplus-camera-4k-t2813107/post55644987

nicholaschum said:
You downloaded the outdated Mahdi, download the latest from here
http://forum.xda-developers.com/one...m-2-7-oneplus-camera-4k-t2813107/post55644987
Click to expand...
Click to collapse
do i have to reflash it entirely? or can i somehow update? i just dont want to go through the hassle of installing apps etc again, because i just did that.
but if i have no choice i will.
if you could please continue to reply quickly that would be great, as i only have about 8hrs till college starts tomorrow and i need my phone, thanks =P

DjDafiDak said:
do i have to reflash it entirely? or can i somehow update? i just dont want to go through the hassle of installing apps etc again, because i just did that.
but if i have no choice i will.
Click to expand...
Click to collapse
Just flash over your current set up. You won't lose data.

nicholaschum said:
Just flash over your current set up. You won't lose data.
Click to expand...
Click to collapse
exactly as those steps mentioned on mahdi's page?
Upgrading from an earlier version: (not recommended)
- Copy the ROM ZIP to your SDCard
- Boot into Recovery
- Flash the ROM zip from SDCard
- Reboot

DjDafiDak said:
exactly as those steps mentioned on mahdi's page?
Upgrading from an earlier version: (not recommended)
- Copy the ROM ZIP to your SDCard
- Boot into Recovery
- Flash the ROM zip from SDCard
- Reboot
Click to expand...
Click to collapse
Yep.

nicholaschum said:
Yep.
Click to expand...
Click to collapse
Thanks alot!!! it fixed it.
just to confirm, i still have franco kernel installed after flashing the mahdi update?, the two things aren't related right?
though i dont feel like the device is smoother, but not sure yet.

DjDafiDak said:
Thanks alot!!! it fixed it.
just to confirm, i still have franco kernel installed after flashing the mahdi update?, the two things aren't related right?
Click to expand...
Click to collapse
You need to flash the latest franco again. Mahdi flashes it's stock kernel.
---------- Post added at 04:18 PM ---------- Previous post was at 04:01 PM ----------
DjDafiDak said:
though i dont feel like the device is smoother, but not sure yet.
Click to expand...
Click to collapse
Kernels need to set in on your device. Give it a few hours. Also sometimes smoothness doesn't have to be felt, but how a piece of software runs is how efficient it is.

nicholaschum said:
You need to flash the latest franco again. Mahdi flashes it's stock kernel.
Click to expand...
Click to collapse
hmm now iam thinking its fixed just because its back to its original kernel again, you sure that if i flash franco now it will be good?
lets say it wont, will i be able to just flash mahdi 2.8 again, and fix it again?

DjDafiDak said:
hmm now iam thinking its fixed just because its back to its original kernel again, you sure that if i flash franco now it will be good?
lets say it wont, will i be able to just flash mahdi 2.8 again, and fix it again?
Click to expand...
Click to collapse
It's because of the old commits in the previous Mahdi releases. The kernel has the latest commits and the ROM was not updated for it. The one you downloaded was 09/03 version but the commit was weeks after 3rd of Sept, requiring a ROM update.Now that you have the latest, you won't experience any of these issues again.

alright, reflashing franco r21( also wiping cache/dalvik hopefully i need to do it again)
will edit in a sec.
edit: its good now =]
thanks ALOT for all your help!

Thought I was doing so well; tablet won't boot to OS

Hey folks; I'm hoping I can get some advice or pointers, or maybe just a slap upside the head with something I've missed.
I have one of the original Shield tablets, and played around with it quite a lot, installing various custom ROMs from the marvelous directions I've found here. When the battery thing happened, I submitted the required info and happily received my new tablet. The original was rooted and customised still, kill-switch averted, and I had two working tablets. I gave the new stock one to my wife.
But then, about three months ago, I was playing with mine again installing a newer ROM than the one I was using (I *think* I was going from an older Bliss rom to one of the Cyanogen), and ... Something Happened (tm). The tablet rebooted in the middle of everything, and now won't boot to an image.
I'm on Windows 10 now, and had some fun getting the drivers working, but they seem to. I can communicate with the tablet through Fastboot, but ADB doesn't see it. I've flashed several versions of TWRP to the tablet, and can boot into that recovery - both through Fastboot and the tablet's power+vol-dn buttons. I've used TWRP to flash several different ROMs, and it *appears* to work (there are no errors), but when I reboot the tablet .... nada. Nothing but the Nvidia boot screen for days.
So now... what have I missed? I'm a little reluctant to flash a stock ROM, but I'm at a loss. I used to have more time to fiddle and figure, and I'm afraid that my impatience is going to kill the thing.

Format system and data see if that works

You need to have the latest bootloader to run the latest roms.
Sent from my ZTE A2017U using Tapatalk

skooter32 said:
Format system and data see if that works
Click to expand...
Click to collapse
Have done, but I'll try it again. Thanks

lafester said:
You need to have the latest bootloader to run the latest roms.
Sent from my ZTE A2017U using Tapatalk
Click to expand...
Click to collapse
I've tried the latest and the not-so-latest, all with similar results.

Hnefatafl said:
I've tried the latest and the not-so-latest, all with similar results.
Click to expand...
Click to collapse
so you wan t your "burning" tablet set again stock?
Did you read about "recovery images" for shield tablet?
If fastboot is working you can flash the recovery image and all will update to the latest(blob,system,boot, etc)
flash latest twrp for shieldtablet.
after that use the nomoreota.zip to prevent the software brick from nvidida

Hnefatafl said:
Have done, but I'll try it again. Thanks
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Also format data system to something other than ext4 then re format it back

skooter32 said:
Also format data system to something other than ext4 then re format it back
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can I ask what that should bring?

wiQbold said:
so you wan t your "burning" tablet set again stock?
Did you read about "recovery images" for shield tablet?
If fastboot is working you can flash the recovery image and all will update to the latest(blob,system,boot, etc)
flash latest twrp for shieldtablet.
after that use the nomoreota.zip to prevent the software brick from nvidida
Click to expand...
Click to collapse
No, I don't want it stock at all, I was just worried that was my only option to get this thing to respond again. I was running BlissPop v.somethingorother, but wanted to update. That's when things went awry.

Right, well it looks like I've got this thing going. I could flash TWRP 3.1.0-0, but not any 3.1.1. Cyanogenmod 12 worked. Reading up a little more (it got slow at work for a couple of days...) I flashed the firmware to 5.0, and could now install TWRP 3.1.1-1! Then I could install (in this case) Lineage 14.1, which *almost* worked. It booted, but there's no wifi.
Then I found a suggestion - I think it was on these forums somewhere - and restarted. Wiped all data again, flashed Cyanogenmod 12, no gapps. Restarted, checked everything including wifi, and is good. Rebooted back into recovery, performed a factory reset, then installed Lineage 14.1 and gapps. When it rebooted, everything is working!
So. Firmware. Huh.
Thanks all.

Hnefatafl said:
No, I don't want it stock at all, I was just worried that was my only option to get this thing to respond again. I was running BlissPop v.somethingorother, but wanted to update. That's when things went awry.
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Click to collapse
do not know if you need the bootloader(blob) from nougat to boot up, that lafester told you. but that sounds plausible. skooter says something from re-formating. so if you tried that all and nothing changes? cache and data partition you wiped also, so it has to be work for my understanding.
went always stock, so can t help you..
but you can use recovery images > twrp > bliss/linage. no need to boot up stock?

wiQbold said:
can I ask what that should bring?
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Click to collapse
I have had similar issues and I tried everything even this plus what harm is it going to be and as the fellow below said if ur in fastboot and recovery with no issues then surely u should be flashing stick to fix Ur problem ?