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[Q] Flashed new kernel, won't boot

I used Hasoon2000's HTC All-In-One Kit to root my phone. That all worked.
The issue came when i flashed a new kernel. I placed the boot.img from King Kang's new ROM (http://forum.xda-developers.com/showthread.php?t=1959099)
Anyway, When i boot I get the HTC, quietly brilliant logo, and this in red letters "This build is for development purposes only. Do not distrubute... "
i can boot into recovery (pwr+ vol down)
And i get the ***TAMPERED*** AND ***unlocked*** tags at the top
I don't know where to go from here...
Thanks for the help.

Also, whenever i boot into recovery or factory reset, neither succeed.
This was probably known info, just wanted to add it.

ccamwilkins said:
Also, whenever i boot into recovery or factory reset, neither succeed.
This was probably known info, just wanted to add it.
Click to expand...
Click to collapse
You mentioned in your original post that you could boot into recovery, so is that not working now? Factory reset might've fubared the recovery piece, so you could do one of two things:
1) download the original RUU version for your phone, relock your phone, and flash the RUU and start over.
2) try reinstalling TWRP.
This whole thing sounds like trying to install a kernel or fastboot flash a boot.img without SuperSU correctly installed. This is what happened to me when I first unlocked my phone and tried to fastboot flash the CM10 boot.img after failing the flash from recovery twice. Without that super-user permission, bad things tend to happen. If you decide to continue on with reinstalling TWRP, make sure SuperSU.zip is flashed successfully from
TWRP, then try your rom/kernel combination again (or even a different combination if you're apprehensive).
BEWARE: sometimes partially flashing these things can corrupt your sd card. I had to reflash the original RUU to fix my phone BEFORE I rerooted and flashed a rom/kernel.

Have you fastbooted a SU to your phone after you rooted and unlocked? I'd imagine you did if you followed the toolkit.. So your on 2.20... Just download cleanrom 5.1 on your computer. Mount sdcard via recovery and drag cleanrom onto phone. Flash entire rom in recovery. I bet it works
Once your on a stable rom, download king kang from your phone. Download flashgui. Open flashgui app, navigate to king kang and let it find the boot img and flash it for you.. Once successful, immediately boot into recovery and flash entire rom through twrp.
Success
Sent from my One X using Tapatalk 2

[Q] Botched TWRP upgrade, now lost root access

While attempting to switch to CM11 I tried upgrading TWRP from 2.4.4 to the newest 2.6+ and it messed up my recovery. Then, while trying to re-flash an older TWRP, I accidentally installed SuperSU over an existing install, and lost root. Tried re-rooting the device using motochopper and it gets to the last part, "rooting device" and it says "failed". Device the reboots, I try to open SuperSU and it says "no SU binary installed". All I'm trying to do is put back TWRP 4.2.2 so I can restore my device. Please help
EDIT: Tried using fastboot to install image, everything looks good, then my tablet freezes up. I do a power cycle, it reboots, and the recovery didn't flash.
UPDATE: Recovery flashed and wiped EVERYTHING. I am back on recovery 4.2.2.0 but nothing is mounted and I can't mount anything, I can't make backups or restore images, and ADB Sideload does not work. Any help would be really, really awesome. I have SDK Manager, and I can currently use ADB on my computer, I just don't know what commands, blobs, or images to use.

Tunameltsalad said:
While attempting to switch to CM11 I tried upgrading TWRP from 2.4.4 to the newest 2.6+ and it messed up my recovery. Then, while trying to re-flash an older TWRP, I accidentally installed SuperSU over an existing install, and lost root. Tried re-rooting the device using motochopper and it gets to the last part, "rooting device" and it says "failed". Device the reboots, I try to open SuperSU and it says "no SU binary installed". All I'm trying to do is put back TWRP 4.2.2 so I can restore my device. Please help
EDIT: Tried using fastboot to install image, everything looks good, then my tablet freezes up. I do a power cycle, it reboots, and the recovery didn't flash.
UPDATE: Recovery flashed and wiped EVERYTHING. I am back on recovery 4.2.2.0 but nothing is mounted and I can't mount anything, I can't make backups or restore images, and ADB Sideload does not work. Any help would be really, really awesome. I have SDK Manager, and I can currently use ADB on my computer, I just don't know what commands, blobs, or images to use.
Click to expand...
Click to collapse
Can you use fastboot to reflash the stock ROM?

Multiple recoveries installed

I'm screwed. I attempted to install an updated TWRP, so i selected that option in ROM Toolbox Pro. Everything installed correctly (TWRP 2.7??). I decide let me see if TWRP installer will replace that with the updated 2.8.5. I run TWRP installer and it installs correctly. My assumption was that the TWRP installer would overwrite the ROM Toolbox version. Well, i reboot into the 2.8.5 recover (like it suggested) and i hit Reboot and then it reboots into 2.7. From there it thinks there is no OS installed. Rebooting from there just reboots me back in 2.7 recovery. I can get into Fastboot, and then back in 2.8.5 recovery. I flashed a new ROM, but that didn't fix it. I attempted to flash an RUU but i can't seem to get that working either. Am I completely screwed and should i call insurance on it?
Help me XDA, you're my only hope.

theoden144 said:
I'm screwed. I attempted to install an updated TWRP, so i selected that option in ROM Toolbox Pro. Everything installed correctly (TWRP 2.7??). I decide let me see if TWRP installer will replace that with the updated 2.8.5. I run TWRP installer and it installs correctly. My assumption was that the TWRP installer would overwrite the ROM Toolbox version. Well, i reboot into the 2.8.5 recover (like it suggested) and i hit Reboot and then it reboots into 2.7. From there it thinks there is no OS installed. Rebooting from there just reboots me back in 2.7 recovery. I can get into Fastboot, and then back in 2.8.5 recovery. I flashed a new ROM, but that didn't fix it. I attempted to flash an RUU but i can't seem to get that working either. Am I completely screwed and should i call insurance on it?
Help me XDA, you're my only hope.
Click to expand...
Click to collapse
To solve this, you could get phone into Fastboot and flash Dottat's RUU for the M8 - he made several versions.
For sure, add HTC_Fastboot.exe to your ADB folder and use it, NOT regular fastboot.
It will overwrite your previous recovery with stock and fix your phone. Then later, you could flash TWRP 2.8.7 thru Fastboot.

I put Dottat's RUU on my external SD card and it loaded, however, whenever it goes to reboot, it still goes back into the wrong recovery.

It's probably not necessary to run an RUU. You incorrectly flashed the new recovery to the wrong partition. Flash the new recovery VIA FASTBOOT, boot into it through the bootloader screen, and either flash a rom or restore a backup and you should be good to go. You definitely don't need to be worrying about an insurance claim for now.
Edit: by VIA FASTBOOT I mean with the command fastboot flash recovery <nameofrecoveryfile>.img

cntryby429 said:
It's probably not necessary to run an RUU. You incorrectly flashed the new recovery to the wrong partition. Flash the new recovery VIA FASTBOOT, boot into it through the bootloader screen, and either flash a rom or restore a backup and you should be good to go. You definitely don't need to be worrying about an insurance claim for now.
Edit: by VIA FASTBOOT I mean with the command fastboot flash recovery <nameofrecoveryfile>.img
Click to expand...
Click to collapse
I would flash firmware or ruu, if indeed he flashed recovery to wrong partition, that partition needs the correct one which firmware wlil do, and ruu will 100% do.
Personally I'd run ruu, go to stock recovery and run a factory reset.

theoden144 said:
I put Dottat's RUU on my external SD card and it loaded, however, whenever it goes to reboot, it still goes back into the wrong recovery.
Click to expand...
Click to collapse
Gotta use ADB and HTC_Fastboot.exe

Thanks for all the tips. I tried re-installing the old ROM after I ran the RUU and it worked. Hopefully it cleared out the incorrect recovery. Lesson learned: don't use apps to update the recovery!
Again thanks for all the help!

theoden144 said:
Thanks for all the tips. I tried re-installing the old ROM after I ran the RUU and it worked. Hopefully it cleared out the incorrect recovery. Lesson learned: don't use apps to update the recovery!
Again thanks for all the help!
Click to expand...
Click to collapse
Twrp manager is not a safe way to flash recovery because they aren't flashing by block name yet. They are still hard-coded to block number. The partitions have changed during ota already...so the app does hose things up a bit.
Sent from my Nexus 6 using Tapatalk

Unlocked Bootloader, S Off but Cannot Install TWRP

I'm running the stock at&t ROM with Android 6. I've successfully unlocked the Bootloader, and have taken S Off (paid SunShine!)
When I boot into Recovery Mode I cannot install from SD without getting a Signature Error. When I attempt to flash TWRP via ADB/Fastboot the bootloader will freeze at prompting the Recovery Mode (only way to overcome is to reflash stock rom).
Any ideas? Was hoping to install LineageOS as I read at&t won't be issuing an OTA for HTC as they've discontinued offering the brand.

Set download mode. Then flash twrp with fastboot command. Fastboot flash recovery twrp.img Should workout just fine.

Nope. Read initial post. After flashing handset hangs when Recovery Mode is selected

StarSage said:
Nope. Read initial post. After flashing handset hangs when Recovery Mode is selected
Click to expand...
Click to collapse
Perhaps its the version of TWRP you are trying to install? Maybe you might have to try an older version since your on 6.0....?
Also, I have the same AT&T device (unlocked bootloader, but S-ON) and am curious about installing custom bootloader/ROM on this device.
Let us know if/when your able to solve it!

So, I downloaded the Windroid Toolkit at https://forum.xda-developers.com/showthread.php?t=2499926 but now I can't get passed the HTC boot screen. I installed Lineage OS, did Wipe Dalvik Cache, then installed Gapps. But no desktop after install. HELP!

Stuck in CrashDump Mode

I just purchased a new OnePlus 7 Pro yesterday and immediately set about rooting it. This is the process I followed:
fastboot oem unlock
fastboot flash boot twrp-3.3.1-4-guacamole.img
TWRP: Install > Select Storage > Internal Storage > Magisk-v20.3.zip
TWRP: Wipe > Format Data
I rebooted and was confused when I wasn't rooted. It seemed the last step had undone my root, so I went back into TWRP and installed Magisk again this time without formatting data. When I rebooted I had root and all was well.
However, there was an OEM update available that warned me it would remove root if I installed it. I found this guide to install an OEM update without losing root, which basically says to download the update via Oxygen Updater and then install it from TWRP. On step 6 is says to select the "Inject TWRP after install" option, but this didn't exist in my TWRP. I went ahead without it, thinking maybe it was enabled by default in my newer version of TWRP. The installation seemed to go without a hitch, but when I rebooted after I was stuck in fastboot. I couldn't boot my phone, nor could I get back into TWRP or regular recovery, only fastboot.
I tried flashing TWRP again using fastboot, but to no avail. I also tried running fastboot -w, but was still stuck in fastboot. I did some more research and found this comment which made it seem like all I had to do was download 10.0-GM21AA-OnePlus7ProOxygen_21.O.20_OTA_020_all_1909172051_db7a3f61-FASTBOOT from here and then run flash-all.bat. Once I did so I ended up stuck on the following screen:
Code:
QUALCOMM CrashDump Mode
--------------------------
dm-verify device corrupted Force Dump
kernel_restart
I can't seem to do anything at all with my device; not even turn it off. I tried holding the power button down for nearly a minute and no response from the phone. Is there any hope at all for my phone or have I properly destroyed it?

https://forum.xda-developers.com/oneplus-7-pro/help/mistake-kernel-error-t4029743
Same thing happened to me and I searched around a bit and found resolution. You can try what I did or try msm tool but search first as crashdump error is becoming common issue it seems
I held both volume buttons until restart and let go of one of them to get into recovery and then boot to boot loader if needed

Thank you so much! I thought I'd corrupted fastboot and permanently bricked the phone.
Once I was in fastboot I used tool all in one to flash 9.5.13-GM21AA-OnePlus7ProOxygen_21.O.16_OTA_016_all_1908281716_b2bb5-FASTBOOT.zip onto my phone by picking Flash Factory Images, and now it's back up and running.
jasons1004 said:
I held both volume buttons until restart and let go of one of them to get into recovery and then boot to boot loader if needed
Click to expand...
Click to collapse
This was the magic trick I needed to know. Holding both volume buttons didn't quite work for me. I held them both down for over a minute and nothing happened. Then I tried holding down the power button and that seemed to work after several seconds. I didn't hold down volume down quickly enough the first time, so I had to do it again. I held both volume buttons and the power button for over a minute, but again, nothing. I tried a couple more times and got it to work. Haven't been able to figure out exactly what causes it to exit the CrashDump mode, but the volume buttons together seems to be the important part.

This time I tried doing the OEM updates first, thinking that attempting to install them manually is what caused my problem. First I installed the 10.0.3.GM21AA update, then after rebooting I installed the 10.3.0.GM21AA update. At this point it said my system was up to date, so I want ahead and booted into fastboot and ran fastboot flash boot twrp-3.3.1-4-guacamole.img. No errors, but no TWRP either. My phone was stuck in fastboot again.
Is it necessary to stick with 9.5.13 if I want root? Is there some way to get TWRP to work with 10?

altayh said:
This time I tried doing the OEM updates first, thinking that attempting to install them manually is what caused my problem. First I installed the 10.0.3.GM21AA update, then after rebooting I installed the 10.3.0.GM21AA update. At this point it said my system was up to date, so I want ahead and booted into fastboot and ran fastboot flash boot twrp-3.3.1-4-guacamole.img. No errors, but no TWRP either. My phone was stuck in fastboot again.
Is it necessary to stick with 9.5.13 if I want root? Is there some way to get TWRP to work with 10?
Click to expand...
Click to collapse
Just use tool to flash 9 then after first boot fasboot flash whatever 10 build you can find. Then after first boot of 10 try boot twrp and install twrp.
Honestly I just used the tool to root and flash recovery. There is a button for that and just pick your files. Good luck

altayh said:
This time I tried doing the OEM updates first, thinking that attempting to install them manually is what caused my problem. First I installed the 10.0.3.GM21AA update, then after rebooting I installed the 10.3.0.GM21AA update. At this point it said my system was up to date, so I want ahead and booted into fastboot and ran fastboot flash boot twrp-3.3.1-4-guacamole.img. No errors, but no TWRP either. My phone was stuck in fastboot again.
Is it necessary to stick with 9.5.13 if I want root? Is there some way to get TWRP to work with 10?
Click to expand...
Click to collapse
You need to use a more recent versions of TWRP with Android 10. Current unofficial version -74 should work. So in your current condition, you should be able to simply boot TWRP (using the correct version), flash TWRP installer zip (if you want TWRP installed), flash Magisk (current version is 20.3) and reboot and you should have root again.
Easiest way I've found to install the OTA updates, is to simply install the update through the phone settings, do NOT reboot immediately after the update, go into Magisk Manager, flash TWRP installer zip as if it were a Magisk module (optional, if you want TWRP installed), then install Magisk picking the option "Install to inactive slot (after OTA)". Than just reboot, and you should be updated and with root.

redpoint73 said:
You need to use a more recent versions of TWRP with Android 10. Current unofficial version -74 should work. So in your current condition, you should be able to simply boot TWRP (using the correct version), flash TWRP installer zip (if you want TWRP installed), flash Magisk (current version is 20.3) and reboot and you should have root again.
Click to expand...
Click to collapse
Ah, I was using the Official TWRP App to get the images so I was under the impression that twrp-3.3.1-4-guacamole.img was the latest. I assume you're saying I should use TWRP 3.3.1-74 Unified Unofficial Q by mauronofrio from over here instead.
redpoint73 said:
Easiest way I've found to install the OTA updates, is to simply install the update through the phone settings, do NOT reboot immediately after the update, go into Magisk Manager, flash TWRP installer zip as if it were a Magisk module (optional, if you want TWRP installed), then install Magisk picking the option "Install to inactive slot (after OTA)". Than just reboot, and you should be updated and with root.
Click to expand...
Click to collapse
This is good to know. Thanks.

Just to follow up, I applied the available OTAs through the phone settings (up to bulid 10.3.0.GM21AA) and then followed the More articulated but fully functional instructions to install TWRP 3.3.1-74 Unified Unofficial Q. Everything went well and I'm now up to date and rooted. Thanks again to both of you!

altayh said:
I assume you're saying I should use TWRP 3.3.1-74 Unified Unofficial Q by mauronofrio from over here instead.
Click to expand...
Click to collapse
That is the correct TWRP to use ("Unofficial" version -74), as it appears you have already determined.
I don't know why the "official" versions have fallen so far behind. It's been months stuck on version -4, so it seems that they have stopped going "official" for some reason. No matter, the unofficial versions are working fine (and in fact required for Android 10 as you now know), so the "official" tag seems like a technicality.

On these OnePlus phones I don't know why they love Qualcomm Crashdump mode. I fixed it sort of like you, but this worked 100%. You hold all 3 buttons (power, vol up, vol down) and you bypass the crashdump (takes several seconds 5 maybe 10), just quickly let go so you'll be in fastboot mode and can work your magic to fix the damn thing....
I even contacted OnePlus on an 8 they had no idea what to do...

Fastboot flash boot recovery.img <-- bad idea
Fastboot boot recovery.img <-- provit