Before I get into the gist of my current problem I think it might be relevant to provide some backstory. I decided I wanted to try and root my phone so I could install a new custom ROM. I had done some jailbreaking back when the iPod touches came out, back when jailbreaking was extremely ghetto and unreliable, so I figured I could teach myself this fairly easily. I unlocked bootloader using the htcdev method without an issue, and, following a guide, downloaded something called Rootboot to flash the phone. There was only one step to this portion, so I assumed it would be easy. Running the rootboot started rooting my phone, however after a couple of lines in the command prompt it said something about the adb, failed, and the phone was stuck in a boot loop with no roms on it at all. I stayed up all night with the damn thing attempting to fix it, and at one point, actually got it to load up the stock ROM from the computer using some combination of RUU's and fastboot commands. I have no clue how I did it, all I know is that it was not through adb sideload because the recovery I had at the time wouldn't work with adb sideload for whatever reason. It was the recovery that came with the All-In-One toolkit, for the AT&T / TELUS version. At this point I figured since the phone was working I would just install the VenomROM, and after a few hours of playing around with fastboot and the bootloader trying to get a ROM loaded, I figured I was familiar enough with all of them to load the ROM.
Which is what brings me to my current issue. I KNOW the boot.img is flashed to the device because I used the All-In-One Toolkit to do it, erased the cache, did it again using fastboot commands in the command prompt, erased the cache, and continued to use recovery to install the ROM. I got it to load and install, cleared the darvik cache, data, and cache, but when booting, the phone would get to the lock screen, upon which sliding to unlock, presented me with a white screen that says "htc" on it instead of a launcher. After a couple of seconds of waiting, it says, "setup has quit responding" and gives me the option to close or to wait. Either option results in the phone rebooting wherein I only see a black screen with the notification bar at the top displaying my battery and no internet/network connection. I have gone back and flashed the boot.img again and cleared cache, darvik cache, and data several times and just have no clue what I'm doing wrong to not get this phone to boot with the ROM. I can reflash at any point from my sideload.zip file and the installation process has an option to flash the kernel (boot.img) because it is included in the zip. Any help would be much appreciated. I highly doubt theres anything wrong with the ROM or boot.img, it is probably me just not doing it right.
I am using (or attempting to use) the 1.2.7 version of VenomXL+ on the HTC One X+ along with TWRP 2.5 as the recovery.
Related
Long time listener, first time caller.
I have the latest hboot 1.45.0013, S-On, Unlocked with HTC Dev Tool.
I used the Hasoon2000 tool to install SU, CWM, and a recovery image. I then used the instructions in the thread (http://forum.xda-developers.com/showthread.php?t=1508556) to install ICS and obtain root installing pyr-o-ice sense 1.1.1 (http://forum.xda-developers.com/showthread.php?t=1469615) Everything worked, created nandroid backup and installed titanium.
Some buttons didn't work, so I looked for updates and found Virtuous ROMs. So, I used CWM to clear dalvic, flashed boot image of the Virtuous Inquisition then used CWM to install zip. Bootloop. ROM just hangs on black screen with white V for 15 to 20 minutes.
MT4GS thread stated that Primadonna and Inquisition were comparable, so I followed the same proceedure, flashed Primadonna boot image then installed ROM through CWM. This time there was tmobile splash screen, but the same system hang.
At this point I tried to restore a recovery, but CWM could not find one. Used Astro to delete all boot images from SD root, assuming this may be the problem, and flashed a Virtuous ROM again. Same problem.
Based on this thread, I thought it might be the kernal, and tried flashing the pyr-o-ice boot image that worked initially. (http://forum.xda-developers.com/archive/index.php/t-1628171.html). No dice. CWM could not install the ROM (error 1)
So, at this point, I used CWM factory reset and wipe all data. And of course that made things worse, because the SD card with recoveries was wiped. I used adb to push the recoveries from Hansoon's toolkit, but stock recovery was not available (red triangle screen hang) and cwm could not mount the SD card.
So, at this point I used CWM to format SD card (blank anyway), and at this point adb failed to recognize the decive and I could no longer fastboot into recovery or hboot through adb. (volume down + power stopped working with pyr-o-ice install)
if i remove the battery and hold power + volume while using an adb reboot hboot command i can get into hboot about every 10th attempt. adb doesn't recognize the device ("waiting on device", or adb devices yields a blank list); however the phone in hboot will transfer to usb fastboot when connected with a cable.
i looked at pushing a zip file through adb to the sd root, but that was ineffective (adb does have write access to the sd root, maybe because i am s-on?). i purchased a second sd card, and copied the recovery images from hansoons toolkit and rebooted into recovery. still went to tmobile splash, followed by V-screen bootloop.
i looked at placing a stock ruu on the sd and naming the file PG59IMG.zip, but because i'm S-on i can't flash radios, so that's out.
So, here we are. Iffy access to fastboot, 2 sd cards, a lot of determination, and a persistent bootloop.
Can someone, PLEASE help me?
Thanks!
AFAIK, you cannot flash the boot.img with CWM if you are S-ON, you *MUST* use Fastboot to flash that. So, before you messed it all up, if you had just extracted the boot.img from the ROM and flashed it using Fastboot, it likely would have worked just beautifully.
Try booting into recovery and doing a regular flash of the ROM, THEN a fastboot flash of the boot.img.
SOLVED!!
Thanks to the folks heading up the HTC Unbricking Project (http://forum.xda-developers.com/showthread.php?t=1627881) ESPECIALLY Dexter93!! who patiently unraveled this for me, and Blue6IX for the Restore to Stock instructions in the Developers Reference Guide (http://forum.xda-developers.com/showpost.php?p=17424340&postcount=24) I'm back to stock, and ready to try it all again!
Can someone send me an apk that automatically clicks the thanks button for selected developers at regular intervals?
Thanks again!
Solved???
Fuzi0719, thanks for your reply. I may have written this inappropriately, but what coded in the command prompt was "fastboot flash boot boot.img".
The ROM zip file was placed on the SD card, and I rebooted into recovery, and used CWM to install zip from SD. I'm new to this so I may have used the wrong term for installing the zip through CWM, the boot image file was always handled through the above command.
I'm back to "stock" at this point, but when I boot into the bootloader, the phone looks for PG59DIAG.zip and PG59DIAG.nbh before PG59IMG.zip.
It then asks if I want to install the update. (This is after I have already installed the "update", and the phone reset itself even with my old wallpaper.) When I got to the home screen there was a white circle in upper left corner of the status bar, with "check content" message. Each time the screen locked (default 30 seconds) unlocking it took me to the mytouch splash screen with the green circle and white background for about 10 seconds before resuming.
Each time I check to see if the phone registers requiring any updates. It doesn't. Two installs of the PG59IMG.zip. "recovery" eliminates the unlock splashscreen, and wiped any customizations. However, the phone will not manually boot into the bootloader; I have to use adb. Hboot reinstalls the PG59IMG.zip as an update every time.
If I accept it reboots within seconds like a fresh doubleshot. If I decline the "update" it reboots to the Tmobile MyTouch 4G Slide text splash screen, then moved to the green circle screen for a few minutes before I get to the homescreen.
Blue6IX was looking for help with these last month (http://forum.xda-developers.com/showthread.php?t=1580077), so maybe they are just extraction files that HTC sends with the OTA update that would prevent my phone from trying to install the "update" every time?
In any case, my question at this point is after coming from such an unstable point with my phone, is this what every relocked bootloader does? Or, is this a problem that means something else is still wrong with the system? Because taking it back to stock has not solved this.
Thanks.
Thanks for clarifying, you wouldn't believe the number of people who fail to follow that one simple step of fastboot flashing the boot.img, so that's why I stated that. So, now you have the phone relocked, and running a stock ROM (the 1.55?), but with CWM 5.0.2.7? Were you wanting to update to the 1.63 ROM? I'm unclear on what it is you want to do. For one thing, if you've already flashed the PG59IMG then I would delete it off the sd card so it doesn't keep trying to load it.
Yup.
It was just that simple.
Mainly I wanted to make sure that my phone was stable before I went back to unlock the bootloader, etc.
Went back to HTC, got a new token (just in case), and I'm creating a nandroid backup right now. Thanks.
I really appreciate it.
Hopefully the next time I get stuck, it's just as simple to fix, but far less embarrassing.
I ran into some trouble trying to install a new ROM, and now have a hard time getting things up and running again.
Just figured I'd share a solution that took me an hour or 2 to figure out.
The Problem
The system didn't boot up any more. At some points I got stuck in a boot reloop, at others in the HTC screen (for development use only)
The Basic Facts
S4
Unlocked
Hboot 1.06.0000
Radio 1.06es.50.02.31
I could always boot into bootloader and into recovery (TWRP 2.3.3.0 - although that one always asks for a password, but when I click on Cancel, it does seem to work
The Things I Tried
I tried to install a ROM by first pushing it with quick adb pusher to the sd-card that was mounted in twrp, I then tried to install that zip file but got all sorts of 'mount' errors
I then tried to fash a stock RUU (I found RUU_Ville_U_ICS_40_S_TMOUS_2.35.531.7_Radio_1.08ts.50.02.16_10.08e.50.04L_release_279577_signed.exe), I relocked the phone with the one-in-all toolbox (which worked just fine), the phone went into bootloader, a White HTC sign appeared on the screen, it sent the file, then did 'updating signatures', but ended up with ERROR [130]: model ID error. I take it that is because it found a different Radio from the one expected
I then tried to flash the 'right' radio for the RUU I found (radio-1.08ts.50.02.16) by doing fastboot boot radio.img, but that gave the following error: "reproduce boot image with on-flash ramdisk error"
The Solution
I finally managed to install the ROM through the all-in-one toolbox. I selected under the 'ADB Sideload a ROM' option under 'Extras', the went into 'adb sideload' in twrp advanced and selected a rom I had downloaded (in my case ViperOneS). It started sending it properly (sending:'sideload' x%), it then showed the Team Venom logo and opened the aroma installer. I selected full install with a full wipe (to be on the safe side), and aroma then did its thing until it said "new ROM flashed successfully". I then rebooted and had to wait a few minutes for the first boot (as it had warned me), but I'm fully back up and running again! So If any of you experience a similar problem, you may want to try this out (and avoid the other things I tried.
Thanks for posting a solution. But I do want to point out that this is the development forum. As such, your post doesn't belong here. The General or Q&A forums are the correct ones.
Sent from my HTC One S using Tapatalk 2
Thanks Thanks Thanks !!!
I've been stuck on boot with every rom's that i've been trying to install!
I was becoming very concern about the problem !
I went from CM10 to the new Viper 2.0 but having troubles with WIFI I start testing others roms and than I become stuck!
Since I've TRW 2.3 and tool kit in my pc I give a shoot at your tutorial and it WORKS.
Thanks again,
Rui
FINAL EDIT: FIXED!!! Sparsechunk files 1,2and 3 have to match the exact name with the firmware folder sparsechunk files.
I did not notice that my firmware sparsechunk files ended in .0 .1 .2 and not 1 2 3 like the tutorial had listed, so I was fastbooting the wrong sparsechunk command. That was the final fix that finally worked for me.
Original post:
SHORT VERSION:
My god this has been one crazy root journey.
I have done absolutely EVERYTHING I could pull up on google to fix my phone, and what seemed to be the final piece to the puzzle, still has not fixed anything.
My phone is bricked, and i would really appreciate help at this point.
The current problem:
When I turn on my phone, it vibrates, and displays the WARNING BOOT LOADER UNLOCKED screen, and stays there forever.
I can access my boot loader, and recovery, but I dont know what to do at this point.
I tried a quick flash stock recovery kit kat with moto tool AIO, and it didnt help.
Any ideas?
LONG VERSION (backround info may help to understand the current issue)
Now, if you want to know what began all of this, continue reading, otherwise the above is my current issue.
After successfully unlocking and rooting my phone
I downloaded SWITCHME, an app that lets you create multible users on the phone. the instructions say that you can use a sub account to test and mess around with anything because you can simply go back to the admin account that has everything untouched.
That was a lie.
1.I deleted .setup, along with a few other things THAT WHERE NOT FLAGGED AS IMPORTANT, assuming the phone would still work. and my phone went bonkers, displaying this infinite message: UNFORTUNATELY, SETUP HAS STOPPED. It was impossible to use the phone, and I could only access bootloader.
2.After endless googling, driver downloading, xda mod installing, I managed to set up my boot loader to do the guide restore stock firmware:http://forum.xda-developers.com/showthread.php?t=2542219
Sadly, I flashed the wrong model number package, I was flashing x35, when I later discovered that my phone is x45.
Flashing the x35 firmware bricked my phone further, to where it would "fail to boot up" and would only display bootloader over and over after attempting to turn the phone on.
3. Simple, I realized I flashed the wrong thing, so I downloaded the x45 firmware from the firmware teem on this website, flashed all of the commands, and bam, the phone starts up with the boot loader warning, and DOES NOT get stuck in the previous boot loader issue I had.
But now the phone wont get past that warning screen so... now im pissed.
Please, if anyone can help me I would greatly appreciate it, Im so close to getting my phone back...
EDIT 2: Looks like the phone wont stay shut down, I realized that if I dont open up boot loader, it will turn itself on and display the warning message.
EDIT:
The stuffs I have, ready to try anything:
CWM touch mod
Moto Tool AIO
Minimal ADB and Fast boot
RETUS x1045 factory firmware
All directories, folders, cmd commands are set up and working properly between all of the programs.
The phone appears to be responding to all cmd commands properly.
I also have the windows one touch super boot root method. (he superboot-windows.bat )
Im afraid to try anything major after freshly flashing the x45 firmware that seemed to bring me one step closer without the help of someone else.
I restored stock to my phone using this link yesturday http://www.ibtimes.co.uk/how-restore-motorola-moto-g-stock-firmware-1447290
it may work for you
I have almost the same problem as if the fastboot not install anything despite not display errors
great that you got it done.
maybe my few cents about my "bricking" story. (xt1032 moto g)
yesterday i wanted to change the rom from cm11 nightly to another custom rom like ehndroix/carbonrom...
first i thought that will be done in a few mins, after having already flashed a custom rom.
then the story began, getting adb work, but, 2weeks ago everything was setup and went fine. dunno why my laptop lost the "drivers".
thats the link which solved that problem: tinyurl . com / kgffjh4 [sorry cant post links outside of xda yet, spam protection]
so after a few hours of getting that fixed i, i began flashing.
suddently i got stuck in bootscreen (ehndroix logo for example)...
then i wanted to go back with my previous backup made internaly of clockworkmod. though i couldnt restore my backup because there was an error message while restoring /data of my backup
also when restoring to factory/wipe in cwm there was that error message about clouldnt "touch" /data, i dont remember the message exactly.
after thinking i bricked everything, i though lets wipe my internal sdcard, maybe that causes the /data error.
then i restarted the device and went for a shower... after 15min i came back and my device was "started".
now i dont know that exactly helped, maybe wiping all data on my phone, or just letting my device boot for a "long" time...
so, thats my yesterdays brick story.
do a factory reset if the bootloader has that option.. otherwise install or run/boot a custom revovery, then either
try the factory reset option there and reboot or..
wipe everything and install a rom
Ok try this, I'm was a victim too:
Relock and unlock bootloader
Download and flash latest Philz
From there format everything...EVERY PARTITION...switch F2FS
After switching wipe every partition again
Select and execute the other 3 wiping option ie., Clean to install new ROM and the other 2 (I can't remember now)
Do this all over again via TWRP too
Now, this is important, don't use the mfastboot for restoring stock...use the one provided by Google for its Android SDK
Flash the stock images
Flash the Moto Razr boot animation and not the one for Moto G to remove the warning sign
I'm 99.99% sure your phone will boot properly
After the phone boots, reflash the Moto G bootanimation
Good Luck!
ngr.hd said:
Ok try this, I'm was a victim too:
Relock and unlock bootloader
Download and flash latest Philz
From there format everything...EVERY PARTITION...switch F2FS
After switching wipe every partition again
Select and execute the other 3 wiping option ie., Clean to install new ROM and the other 2 (I can't remember now)
Do this all over again via TWRP too
Now, this is important, don't use the mfastboot for restoring stock...use the one provided by Google for its Android SDK
Flash the stock images
Flash the Moto Razr boot animation and not the one for Moto G to remove the warning sign
I'm 99.99% sure your phone will boot properly
After the phone boots, reflash the Moto G bootanimation
Good Luck!
Click to expand...
Click to collapse
I try to flash any recovery but after entering I get an android and says no commands, and installation does not throw errors
angelgzg said:
I try to flash any recovery but after entering I get an android and says no commands, and installation does not throw errors
Click to expand...
Click to collapse
You're still in stock recovery.
Use fastboot flash recovery xyz.zip to flash philz recovery
Use this when you're in bootloader mode.
ngr.hd said:
You're still in stock recovery.
Use fastboot flash recovery xyz.zip to flash philz recovery
Use this when you're in bootloader mode.
Click to expand...
Click to collapse
I flash the recovery but rebooted into recovery, the android keeps popping up (no commands)
FINAL EDIT: FIXED!!! Sparsechunk files 1,2and 3 have to match the exact name with the firmware folder sparsechunk files.
I did not notice that my firmware sparsechunk files ended in .0 .1 .2 and not 1 2 3 like the tutorial had listed, so I was fastbooting the wrong sparsechunk command. That was the final fix that finally worked for me.
Sorry I'm traveling a d couldnt update thread fast enough.
I unlocked the bootloader on an old HTC One S through the directions on the HTC Developer website. I then loaded the CWM recovery and did the rooting and installed the Rom manager app. The SuperSU update had to be added with the abd sideloader and the rootcheck said it had root access. Both of those programs seemed to be working fine. Then I send the Zip file of a ROM (idk which one because I renamed it so it would be easier to enter) and from the ROM manager I select the one I just sent and go to install it.
Then the phone turns off and a long string of code ends with "transfer successful" or something to that effect but stays there. I rebooted and tried again and the same thing. Tried again and did a factory reset from the recovery but nothing would get the phone to boot past the HTC screen. I tried Wiping the davlik cache and the regular wipe and hard reset and adding the recovery again but NOW MY PHONE DOESNT SHOW UP WITH ADB DEVICES CMD.
I am already in over my head but I have been enjoying learning from this and other websites about how android works. However I think I have exhausted my research options and I am at dead end...
How can I get the adb commands to work again?
bmckeeoneill said:
I unlocked the bootloader on an old HTC One S through the directions on the HTC Developer website. I then loaded the CWM recovery and did the rooting and installed the Rom manager app. The SuperSU update had to be added with the abd sideloader and the rootcheck said it had root access. Both of those programs seemed to be working fine. Then I send the Zip file of a ROM (idk which one because I renamed it so it would be easier to enter) and from the ROM manager I select the one I just sent and go to install it.
Then the phone turns off and a long string of code ends with "transfer successful" or something to that effect but stays there. I rebooted and tried again and the same thing. Tried again and did a factory reset from the recovery but nothing would get the phone to boot past the HTC screen. I tried Wiping the davlik cache and the regular wipe and hard reset and adding the recovery again but NOW MY PHONE DOESNT SHOW UP WITH ADB DEVICES CMD.
I am already in over my head but I have been enjoying learning from this and other websites about how android works. However I think I have exhausted my research options and I am at dead end...
How can I get the adb commands to work again?
Click to expand...
Click to collapse
Hi,
I have reported this thread to be moved to the right Q & A section where you might be able to get help quickly.
Good luck.
Well, not fully bricked, but it's completely non-working just the same.
I've had the K1 for a few years now and have been fine with the standard, stock OTA updates. Recently though I've been seeing constant notifications that I'm short on ram and after uninstalling apps, deleting old files, it would work ok for a few days and then start complaining about low memory again. So I figured that something must be corrupt and now is a good a time as any to root and see about flashing a new rom.
I've owned many android devices over the years and have rooted and patched most of them. so I'm familiar with the tools.
This time however, I think I must have crossed something up somewhere.
What I did was this:
Grabbed the minimal ADB package and fastboot drivers.
Booted into the bootloader and ran the fastboot oem unlock. No problem.
From the nVidia site, I then grabbed and flashed the latest stock image and recovery, just to ensure I was on a clean slate. No problem.
Flashed the latest TWRP for the device. No problem.
Flashed SuperSU. No problem.
Booted into the stock system to make sure everything was still working and it was. But, this is the start of where I maybe hosed things up(?).
While running stock, I converted the SD card to internal memory, just so I wasn't having to mess with it later, not thinking that I'd have to do it again anyway after flashing a new rom.
Rebooted back to TWRP and proceeded to flash the new rom (AOSP Extended (AEX) 5.8).
I flashed it by way of the sideload method rather than from a zip file sitting on the SD card. This all seemed to work just fine.
Next I went ahead and flashed OpenGapps Mini. This resulted in an error 70 and after reading about it, it was a simple matter of going into the advanced settings in TWRP and extending the system partition. Did that and OpenGapps then flashed with no problem.
Finally I wrapped it up by flashing tegra124-tn8-p1761-1270-a04-e-battery.dtb and rebooted.
... Nothing. Now I know that when flashing a new rom, the first boot can take some time, but I let it sit for about 2 hours with no result. It didn't appear to be boot looping, but instead just stuck on the nVidia boot screen. Forced it to boot back to the bootloader and brought up TWRP. I obviously did something wrong, so I prepared to reflash the stock image.
Did the wipe, flashed the files and rebooted. Again, nothing.
This time however, not only can I not boot to the system, I now also can't get back into recovery.
No matter how many times I reboot, or attempt to reflash anything, it hangs on the boot screen when attempting to get back into recovery.
So I'm stuck. I've tried reflashing TWRP, stock recovery and stock system, with the SD card in and out, a number of times, all with no joy.
I can access the bootloader, so I can at least run fastboot commands, but that's all I can do. Without being in recovery, I can't access an ADB shell if I need to repair anything.
If you're still with me after this rambling mess, do I have any hope at all in recovering this thing?
Hi,
I think the problem is in the modified .dtb try flash the original file.
Or : https://forum.xda-developers.com/showpost.php?p=82359331&postcount=39
greetings
kozaqu said:
Hi,
I think the problem is in the modified .dtb try flash the original file.
Or : https://forum.xda-developers.com/showpost.php?p=82359331&postcount=39
greetings
Click to expand...
Click to collapse
That got me in the right direction and I can at least get back into recovery now. Thanks! :good:
Also in the same boat
mkhopper said:
Well, not fully bricked, but it's completely non-working just the same.
I've had the K1 for a few years now and have been fine with the standard, stock OTA updates. Recently though I've been seeing constant notifications that I'm short on ram and after uninstalling apps, deleting old files, it would work ok for a few days and then start complaining about low memory again. So I figured that something must be corrupt and now is a good a time as any to root and see about flashing a new rom.
I've owned many android devices over the years and have rooted and patched most of them. so I'm familiar with the tools.
This time however, I think I must have crossed something up somewhere.
What I did was this:
Grabbed the minimal ADB package and fastboot drivers.
Booted into the bootloader and ran the fastboot oem unlock. No problem.
From the nVidia site, I then grabbed and flashed the latest stock image and recovery, just to ensure I was on a clean slate. No problem.
Flashed the latest TWRP for the device. No problem.
Flashed SuperSU. No problem.
Booted into the stock system to make sure everything was still working and it was. But, this is the start of where I maybe hosed things up(?).
While running stock, I converted the SD card to internal memory, just so I wasn't having to mess with it later, not thinking that I'd have to do it again anyway after flashing a new rom.
Rebooted back to TWRP and proceeded to flash the new rom (AOSP Extended (AEX) 5.8).
I flashed it by way of the sideload method rather than from a zip file sitting on the SD card. This all seemed to work just fine.
Next I went ahead and flashed OpenGapps Mini. This resulted in an error 70 and after reading about it, it was a simple matter of going into the advanced settings in TWRP and extending the system partition. Did that and OpenGapps then flashed with no problem.
Finally I wrapped it up by flashing tegra124-tn8-p1761-1270-a04-e-battery.dtb and rebooted.
... Nothing. Now I know that when flashing a new rom, the first boot can take some time, but I let it sit for about 2 hours with no result. It didn't appear to be boot looping, but instead just stuck on the nVidia boot screen. Forced it to boot back to the bootloader and brought up TWRP. I obviously did something wrong, so I prepared to reflash the stock image.
Did the wipe, flashed the files and rebooted. Again, nothing.
This time however, not only can I not boot to the system, I now also can't get back into recovery.
No matter how many times I reboot, or attempt to reflash anything, it hangs on the boot screen when attempting to get back into recovery.
So I'm stuck. I've tried reflashing TWRP, stock recovery and stock system, with the SD card in and out, a number of times, all with no joy.
I can access the bootloader, so I can at least run fastboot commands, but that's all I can do. Without being in recovery, I can't access an ADB shell if I need to repair anything.
If you're still with me after this rambling mess, do I have any hope at all in recovering this thing?
Click to expand...
Click to collapse
I'm also sort of in the same boat i had a custom rom installed and decided to go back to stock os and now i'm stuck at either the Nvidia Logo or the Fastboot menu there's nothing else it let's me do i'd take any advice at this point. I can use Fastboot commands and I've tried Flashing Twrp.img and also flashing all the stock os which goes through with no problems i reboot the device and it's just stuck at the Nvidia logo
Ps: how did you manage to get back into recovery
Hello.
I think i had the same Problem.
I Flashed a Custom Rom, MiniGapps and the tegra...Battery file and since then i had boot loop an the NVidia Logo.
The Problem was: i flashed the tegra-Battery.ZIP file!!!
I noticed that i have to unzip it and flash teh tegra-..battery.DTP file.
since then it booted up again.
the OpenGappMini was buggy. it worked with the Nano!
Hope this helps for you as well!
OMG you guys. I did the exact same damn thing. Flashed the ZIP instead of the DTP file. 100 million thanks to you. I'm going to give it a shot now.
It worked! I wonder how many other folks didn't realize it wasn't a zip to flash to dtb and bricked their devices.