3 flashes at reboot and phone shuts off - ZTE Axon 7 Questions & Answers

Successfully upgraded to B19 & reinstalled TWRP via EDL. Phone booted fine. Booted to TWRP & flashed SU 2.79. OK back to System. Attempted to flash TWRP 3.1 and again it just booted to black screen in Recovery (same issue in B15). Reflashed TWRP via EDL and booted OK to recovery to flash SU 2.79.
When attempting to reboot to System, all looked OK, but after ZTE screen LED blinks hard red twice and phone shuts down during 3rd blink.
Reboot to recovery is OK Restored previous B15 and get same result at reboot. Same two flashes and no charging indication when plugging in with power off. Hoping not a hardware failure.
Any idea? Thanks.

Hey, I had the same problem a couple days ago, and I eventually got stuck in permanent EDL mode. Flashing full B15 through EDL worked for me.

amphi66 said:
Successfully upgraded to B19 & reinstalled TWRP via EDL. Phone booted fine. Booted to TWRP & flashed SU 2.79. OK back to System. Attempted to flash TWRP 3.1 and again it just booted to black screen in Recovery (same issue in B15). Reflashed TWRP via EDL and booted OK to recovery to flash SU 2.79.
When attempting to reboot to System, all looked OK, but after ZTE screen LED blinks hard red twice and phone shuts down during 3rd blink.
Reboot to recovery is OK Restored previous B15 and get same result at reboot. Same two flashes and no charging indication when plugging in with power off. Hoping not a hardware failure.
Any idea? Thanks.
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Click to collapse
try flashing b15 twrp in edl, then reboot to recovery. flash twrp 3.1 then supersu then terminal reboot disemmcwp.
see if it changes anything.
or try installing twrp in fastboot.

Gnreux said:
Hey, I had the same problem a couple days ago, and I eventually got stuck in permanent EDL mode. Flashing full B15 through EDL worked for me.
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That took care of it. Thank you. The non-charging had me concerned as I hadn't read of that issue!

Related

Problem after problem with the Moto X Pure

So I took the OTA for MM and everything seemed fine. I noticed that if I tried to go into recovery my device would just restart. I flashed the recovery image but the same thing happened. After I tried to flash the recovery file, ADB did not recoginize my device anymore. I flashed TWRP to see if that would work. From the bootloader ADB did not recognize my device but if I went into TWRP my device showed up. I did not install SuperSU from TWRP but when I rebooted I was in a bootloop. So I used the restore to stock tool to reset everything. It flashed fine but failed on the radio file. Now I can't set it up because it hangs at the WiFi screen, ADB does not recognize the device for me to flash again, and I can't figure out how to fix this.
Steeleio said:
So I took the OTA for MM and everything seemed fine. I noticed that if I tried to go into recovery my device would just restart. I flashed the recovery image but the same thing happened. After I tried to flash the recovery file, ADB did not recoginize my device anymore. I flashed TWRP to see if that would work. From the bootloader ADB did not recognize my device but if I went into TWRP my device showed up. I did not install SuperSU from TWRP but when I rebooted I was in a bootloop. So I used the restore to stock tool to reset everything. It flashed fine but failed on the radio file. Now I can't set it up because it hangs at the WiFi screen, ADB does not recognize the device for me to flash again, and I can't figure out how to fix this.
Click to expand...
Click to collapse
Just restore the last stable nandroid you made.
What about fastboot
Steeleio said:
So I took the OTA for MM and everything seemed fine. I noticed that if I tried to go into recovery my device would just restart. I flashed the recovery image but the same thing happened. After I tried to flash the recovery file, ADB did not recoginize my device anymore. I flashed TWRP to see if that would work. From the bootloader ADB did not recognize my device but if I went into TWRP my device showed up. I did not install SuperSU from TWRP but when I rebooted I was in a bootloop. So I used the restore to stock tool to reset everything. It flashed fine but failed on the radio file. Now I can't set it up because it hangs at the WiFi screen, ADB does not recognize the device for me to flash again, and I can't figure out how to fix this.
Click to expand...
Click to collapse
Are you using the new SuperSU beta? The play store / alpha version of supersu is not compatible with MM. I suggest more reading, specifically this thread: http://forum.xda-developers.com/apps/supersu/2014-09-02-supersu-v2-05-t2868133/page425
Also, because you did not fastboot flash the LP modem after returning to stock, your radio/wifi will not work. It's not an issue with the phone, but rather user-error. Fortunatally, it is a simple matter of getting you working again.
My advice is: Flash the stock unrooted MM TWRP backup (you should already be on the MM modem) and you should be able to start over. Just be sure to use the appropriate supersu beta, and DO NOT modify the boot image.

Phone restarts, cant get in too bootloader mode.

Hi all!
Yesterday i tried to update my twrp to a new version. I flashed it in twrp and everyting went well i thought.
So when the phone rebooted i get a second of a red blinking light then a black screen. So i restarted it again and it get in to the phone. I downloaded twrp from the offical app in playstore and tried to flash it from there. Same thing, a second of a red light that blinked then the black screen.
So now i have tried to get he phone in fastboot mode and my phone response to the adb commando, adb reboot bootloader and the phone reboots but then again it just reboots to my ROM again. I cant reboot to the bootloader mode.
I have installed all the drivers that is necesarry, but still it dosent work. Also, i have tried to flash the twrp file in adb toolkit for my Axon 7.
What can i do?
EDIT:
Its solved! I downloaded another twrp file, a older version then i got twrp back

HELP! Phone won't boot from twrp!

I've unlocked the bootloader, flashed twrp from pc and I was going to flash the supersu zip. Unfortunately, when I went in recovery (twrp) and flashed the supersu zip(installation process didn't show any problem) I clicked reboot and the phone didn't boot! It just turns off(no led or similar). I have fastboot and twrp access, I tried flashing omnirom using the adb sideload command, everything went fine but still when pressing reboot nothing happens! I even tried to boot manually (after flashing the ROM) with the physical button but still nothing(this time the led blinked twice).
I used the latest version of twrp for Athene, version 2.82 of supersu if this could help.
Edit: was it necessary to flash a different kernel, as it was a nougat rom? The rooting guide I followed didn't mention that.
Edit: Everything worked fine before Supersu, the problem must be related to Supersu but how can I solve?

Stuck at "Google" screen after TWRP wipe

Hi,
I did a TWRP wipe (everything checked) to prepare for a restore to stock, but my device is now stuck at the very first "Google" screen with the pad lock icon at the bottom. How do I get it to boot?
goister said:
Hi,
I did a TWRP wipe (everything checked) to prepare for a restore to stock, but my device is now stuck at the very first "Google" screen with the pad lock icon at the bottom. How do I get it to boot?
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Click to collapse
So since everything was checked, that means you wiped the system partition. The device will not boot if you do that unless you flash a factory image via fastboot or new ROM via TWRP
OK, I thought wiping /system would just bring it back to factory state. 2 questions now
1. How do I get to recovery when it's always stuck at the Google screen with no adb access? Would I have to wait for the battery to run out (hence turn off), charge it for a while, then use the buttons to boot to recovery, or is there a faster way?
2. I am actually trying to revert to stock ROM (downloaded at https://developers.google.com/android/images#angler) by following step 10 of the Heisenburg guide (https://forum.xda-developers.com/nexus-6p/general/guides-how-to-guides-beginners-t3206928) which advises me to use fastboot to flash the individual images. In my case, how do I boot to fastboot?
OK, so I managed to boot to the bootloader and run the following commands as per the Heisenberg guide (using the stock MTC20L firmware)
Code:
fastboot flash bootloader C:\angler\images\bootloader-angler-angler-xx.xx.img
fastboot reboot-bootloader
fastboot flash radio C:\angler\images\radio-angler-angler-xx.xx.img
fastboot reboot-bootloader
fastboot flash boot C:\angler\images\boot.img
fastboot erase cache
(above command is unnecessary on Android 7.1.2 and above)
fastboot flash cache C:\angler\images\cache.img
(above command is unnecessary on Android 7.1.2 and above)
fastboot flash recovery C:\angler\images\recovery.img
fastboot flash system C:\angler\images\system.img
fastboot flash vendor C:\angler\images\vendor.img
Everything was successful, and I did a fastboot reboot after that.
However, my device still doesn't boot up. This time. It's boot loops for a few times before turning off.
I tried booting up to bootloader with power/vol-. Curiously, I can now only do this when cable is connected. If cable is disconnected, the orange LED just blinks once when power button is pressed, and nothing happens. Once cable is connected, then I'm able to boot up to bootloader with the button combination. I then retried the flash process again, but still no go. I noticed after fastboot reboot that the orange LED blinked a few times before rebooting and boot looping.
Kinda stuck now, any ideas?
Try booting into recovery and doing a factory reset. I've had that happen to me a few times after flashing factory images and a wipe in recovery always fixed it.
Just for future information: if at any time the device is stuck in a bootloop you can get it to robot into recovery by holding the power and volume down buttons for 10 seconds, or get it to boot into bootloader by holding power and volume up buttons for 10 seconds.
Face_Plant said:
Try booting into recovery and doing a factory reset. I've had that happen to me a few times after flashing factory images and a wipe in recovery always fixed it.
Just for future information: if at any time the device is stuck in a bootloop you can get it to robot into recovery by holding the power and volume down buttons for 10 seconds, or get it to boot into bootloader by holding power and volume up buttons for 10 seconds.
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Click to collapse
Thanks. Booting into stock recovery shows an exclamation sign with "no command", since I don't have TWRP anymore. Would I need to first flash TWRP before I can do a factory reset?
I just tried flashing to the same sock firmware as before the problem happened (7.1.2 N2G47W) but still same problem. I notice that after the Google logo disappears and the screen goes blank, the orange LED blinks 10 times before rebooting.
Edit: Tried factory resetting in stock recovery (by holding down power button and pressing vol+), the rebooting after factory reset. Still getting a boot loop.
OK I solved the problem. Apparently if you reboot after the flash, you need to disconnect the USB cable, else it will boot loop.
OK I solved the problem. Apparently if you reboot after the flash, you need to disconnect the USB cable, else it will boot loop.
goister said:
OK I solved the problem. Apparently if you reboot after the flash, you need to disconnect the USB cable, else it will boot loop.
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brother help me! i am facing same issue
first little info abt my device.
my device was running on android nougat with twrp recovery installed but the device was not rooted.
so get back to stock and install oreo I followed every step given on http://www.androidexplained.com/nexus-6p-revert-stock/ but somehow my phone is stuck at bootloop with no recovery installed.
Please help me here.
As per the Heisenberg guide, if you don't install root (SuperSU or Magisk), TWRP won't stick, so you'll go back to stock recovery.
For me, simply unplugging the USB cable after rebooting after a flash solved my problem. For some reason, if the cable is connected during reboot, it would boot loop.
brother, somehow I managed to install twrp. but everytime I touch it 2-3 times the phone gets switched off.
then it keeps rebooting to 'Google' logo.
can you tell me what should I do now?
@goister Hi how you manage to get to recovery when it's always stuck at the Google screen with no adb access. Please I am stuck there
tommast said:
@goister Hi how you manage to get to recovery when it's always stuck at the Google screen with no adb access. Please I am stuck there
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Click to collapse
hi, did youmanage to solve this problem? I am aving the exct same problem. Disconnecting the ucb isnt working for me

Bootloop and I can't access the Bootloader

I've had a Galaxy SM-T510 for about 18 months. I installed a custom ROM and it worked fine. When it booted up I received a message "Bootloader is unlocked and security cannot be guaranteed, press power button" and when you pressed the power button it booted up fine. Recently, I installed TWRP and when I rebooted it goes to the some "Bootloader is unlocked, etc" error message, but when you press the power key it restarts and loops to the same point. Holding the power key, with volume up, volume down or both makes no difference. I installed Fonepaw which appears to only work in Download mode which I can't access. If I run Odin or Kies it doesn't recognise that there is a phone attached. Any suggestions?
I've solved the problem. Holding down both volume up & volume down at the same time, and plugging it in puts the device into download mode.
Actually, I haven't solved the problem. I can now install an OS thru either Odin or TWRP, but all the OS I have tried go into a bootloop and the device never finishes booting up.
I'm disappointed no one has any suggestions. I decided to replace TWRP with Orange Fox and installed Lineage, the device of course went into a bootloop. I then booted it into recovery and it went into TWRP. So I installed Orange Fox and wiped everything, I reebooted and this time it went into Orange Fox. I reinstalled Lineage -> another bootloop, tried to get back into recovery and it was TWRP.
BillSchutt said:
I'm disappointed no one has any suggestions. I decided to replace TWRP with Orange Fox and installed Lineage, the device of course went into a bootloop. I then booted it into recovery and it went into TWRP. So I installed Orange Fox and wiped everything, I reebooted and this time it went into Orange Fox. I reinstalled Lineage -> another bootloop, tried to get back into recovery and it was TWRP.
Click to expand...
Click to collapse
You aren't getting help because you are posting in the wrong place. And, if you are coming from an old custom ROM, you have to first flash the right stock ROM. I no longer have a 510 so I'm not sure which stock ROM you need but if you check the first post for the custom ROM you want in the ROMs, kernels and recovery thread, it should tell which one it is based on.

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