i got into recovery and flashed the acer stock rom (i think its a honeycomb 3.2.1) then i mistakenly flashed onyx kernel which is for ICS. when i rebooted the tablet, an error message appears : "boot verified failed..." When i tried to get into recovery by pressing volume down and power, the following text appears:
SD update cmd: recovery
--update package = SDcard:update.zip
booting recovery kernel image
recovery verified failed
i tried to boot into fastboot by plugging it into a computer and update its drivers when the "starting fastboot us download protool" appears but nothing happend.
what should i do. help please.
I did a factory reload of a rooted phone with CWM.
Now for the CWM issue the Moto G loaded OK and then said there was an update for android to fix some bugs. This was 4.4.3. I loaded it and it gets half way and it then says
"Signature verification fail"
at the bottom of the screen and
" Install Untrusted Package"
The options are yes, no or go back
at the top....
whichever one I try it then tries to boot shows the Android / Motorola screen and starts up gets a txt message for 2-3 seconds... it then goes back to Android CWM recovery with the same options as above and repeats the process. again and again and again. No function keys will stop this cycle which just repeats again. This continues until the battery dies.
any ideas ? how can I override this action in CWM v6.0.4.6 and force it to do a factory reload ? any help or advice much appreciated.
The following thread had a similar problem and was fixed... http://forum.xda-developers.com/showthread.php?p=53404637
NerdNoob1210 suggested...
"If you can still power your phone, can you still access the boot loader? If so, I would suggest using adb from a computer to flash Phillz recovery. CWM always gave me a lot of random errors when flashing items. You could use PhillZ to flash the stock ROM for 4.4.2. After that, just follow the same process I did. Download the update zip via the OTA download when it prompts you. Once it's finished, DON'T boot back into Android. Boot into Phillz recovery from the boot loader, move the zip out of the cache and onto sdcard or your computer, and then flash it either straight from the phone or by sideloading it from your computer. Then you'll have a working version of vanilla 4.4.3, and you can flash over a custom ROM in the future if you so choose."
unfortunately I can't get into bootloader. I can connect usb and it makes no difference. therefore adb commands dont work. it just goes straight into screen described with those three options. I'm hoping that there is an override action in CWM which isn't power and volume down which do nothing.
If not how can I force it into bootloader instead please ? any suggestions appreciated.
Cannot boot into download or recovery mode
Hi, my samsung Tab2 is stuck at the "Firmware upgrade encountered an error" screen. No matter which combination of buttons I press, I cant get into download or recovery. I've tried flashing with Odin, it shows successful but nothing has changed. I tried the ADB command but it says "Waiting for device". When I plug in the tab to the charger (or when I connect it to the PC) it comes on automatically with the "Firmware upgrade encountered an error" screen. Is it a power button thing or is it something else ?
Thanks.
Sachin
Flash the CWM recovery via Odin, and restart. now you can go to the recovery mode and install ROM from sd card.
Dont try to flash any other recovery file, working with CWM only.
Hi,
Thanks for the reply. Unfortunately, I've already tried that, Odin shows it is successful but when i restart, nothing seems to have changed, the same upgrade error comes back.
sachin
I had stock rom installed when I was facing "cant connect to camera issue", which itself was a hardware issue-solved by changing the camera in service center. Now, when I wanted to update my phone to cm13 or lineage or even to install supersu and twrp, I'm unable to do so with error, "signature verification failed". My device is not rooted, getting detected in adb, fastboot mode. Tried installing cwm/twrp recovery in fastboot mode but my phone restarts again with stock recovery not with twrp or cwm. A thread said I should restart phone from fastboot directly into recovery..when I tried the same with vol up+ vol down + power button, yu followed by a blank screen appears and nothing happens. I searched various posts from xda, but cant seem to find a solution. Hope one of you guys could help me out. Thanks.
I was trying a new ROM after installing mobile odin (pro) and superSu. However after failed installation the tab is restarting in recovery mode only ( screen shot attached). It is neither detected by odin nor can I install any apk as it is not booting further. I have wiped all data and caches and also have the recovery image (cwm and one supplied by mobile odin) but both are showing signature verification failed due to stock <3e>. So if somehow I can bypass the signature verification , I can load the backup. In short--
1. Tab not detected in PC ( via ODIN) , which was perfectly detected earlier. So no method via PC possible.
2. Tab not going beyond recovery mode, so no APK installation is possible.
3. It can read from SD card in recovery mode , but every image ( I know they are good, as used them earlier) is showing " Signature verification failed" and aborting.
4. I have a working CWM image but cannot install it due to reason 3 ( probably <3e> is the culprit).
I have searched the forum as far as I could but found all solutions are either PC based or APK based.
When you are in recovery, is the tab detected via adb from pc?
bukaida said:
I was trying a new ROM after installing mobile odin (pro) and superSu. However after failed installation the tab is restarting in recovery mode only ( screen shot attached). It is neither detected by odin nor can I install any apk as it is not booting further. I have wiped all data and caches and also have the recovery image (cwm and one supplied by mobile odin) but both are showing signature verification failed due to stock <3e>. So if somehow I can bypass the signature verification , I can load the backup. In short--
1. Tab not detected in PC ( via ODIN) , which was perfectly detected earlier. So no method via PC possible.
2. Tab not going beyond recovery mode, so no APK installation is possible.
3. It can read from SD card in recovery mode , but every image ( I know they are good, as used them earlier) is showing " Signature verification failed" and aborting.
4. I have a working CWM image but cannot install it due to reason 3 ( probably <3e> is the culprit).
I have searched the forum as far as I could but found all solutions are either PC based or APK based.
Click to expand...
Click to collapse
Signature verification fails because you are on stock recovery. Also have you tried booting in to download mode then plugging the USB cable to your tablet, then pressing volume up to start the download mode, then plugging the other end to your PC while odin is running? It should get detected
Power+ Vol up and Power + Vol down both are going to recovery mode. Plus getting an error 'logo_espresso7.jpg' draw failed at initial screen. Is there any <3e> compatable recovery without signature verification failed that can be run from sd card directly?
Ps: This happened when I tried to install "crdroid-5.1.1-20151103-p3110" via mobile ODIN pro.
The Tab is not detected in ADB server either.
bukaida said:
Ps: This happened when I tried to install "crdroid-5.1.1-20151103-p3110" via mobile ODIN pro.
Click to expand...
Click to collapse
The rom was meant to be installed with twrp or other custom recovery and not via mobile odin.
john99ap said:
The rom was meant to be installed with twrp or other custom recovery and not via mobile odin.
Click to expand...
Click to collapse
Yeah, the fault is mine, lack of knowledge. But what now? Can I recover my Tab ?
please help.
[Solved Problem]
The problem is solved. I finally could figure out that the culprit was the external volume down key ( not letting me go to download mode). So I opened the back cover as the last option and press the soft points corresponding to volume down and power together with two tooth-peaks. And voila , it issued the warning screen, and pressed up and it went to download mode. Connected with odin, flashed and load cwm recovery . Now that <3e> kernel is also gone.
Ps. It was weird about the Vol key behavior as it was working fine in both side in recovery mode during selection.
bukaida said:
The problem is solved. I finally could figure out that the culprit was the external volume down key ( not letting me go to download mode). So I opened the back cover as the last option and press the soft points corresponding to volume down and power together with two tooth-peaks. And voila , it issued the warning screen, and pressed up and it went to download mode. Connected with odin, flashed and load cwm recovery . Now that <3e> kernel is also gone.
Ps. It was weird about the Vol key behavior as it was working fine in both side in recovery mode during selection.
Click to expand...
Click to collapse
if you want to install the latest roms, you should update to the latest common twrp from android-andi http://andi34.github.io/recoveries_tab2.html
cwm recovery is outdated and causing issues with the latest roms
Is twrp safe to run from mobile odin? Will it automatically overwrite installed cwm?
bukaida said:
Is twrp safe to run from mobile odin? Will it automatically overwrite installed cwm?
Click to expand...
Click to collapse
install twrp as zip with your current cwm. its the easiest way. twrp will replace cwm, yes.