Likebook Mars frozen on boot screen and won't respond

[tenque]

The battery died overnight and when I plugged it in to turn it on this morning I think it got unplugged during the boot process. Now it's frozen on the "Starting up" screen and no amount of charging or pressing the power button seems to fix it. The progress squares never change, so I can only assume it's stuck powered off.
I upgraded to the Android 8.1 firmware a few weeks back. What can I do to backup the internal storage and reset the thing?

[raygj]

leave likebook on charge for several hours
press the power-button in and hold in ( for about 30 seconds or more) until likebook reboots(this is the standard android reboot procedure for a frozen android system)
if this does not work then

just turn likebook off (power-off)
reinstall 8.1 upgrade

[tenque]

Holding the power button for 30 seconds or longer doesn't seem to do anything and it's been charging since yesterday, so I'm going to try reinstalling Android 8.1. Is there any way to backup the internal storage in case it gets wiped?

[tenque]

Well my laptop doesn't detect it on USB, so I'm looking into getting a repair or refund or something. The important stuff was on the SD card anyway, so I can afford to lose the internal storage.

[raygj]

Originally Posted by tenque

Well my laptop doesn't detect it on USB, so I'm looking into getting a repair or refund or something. The important stuff was on the SD card anyway, so I can afford to lose the internal storage.

try to reinstall 8.1 upgrade
this is what happened to me when i upgraded to 8.1

hi , 1st attempted the update with the new (2nd ver. correcting the erasing error) see <https://twitter.com/BoyueTechnology/status/1298807003393847296>
my first time it loaded the firmware 100% rebooted 1 black screen erased then jumped to reboot then got stuck in a rebooting loop.I almost had a heart attack
2nd attempt I could not turn off so i plugged in usb cable held the power button in until window's prog could not detect device then quickly inserted paper clip to reset hole held it 3 sec then removed it .loader program detected.attempted upgrade. red fail a 5%.
3rd same steps as 2nd attempt. got to 17% red fail.
4th attempt same steps as 2nd attempt got to 100% it reset it self,black screen,jumped to reboot jumped to language selection and then wifi network selection for connection the jumped to home screen.you have to go to google-play.redoing you google account login.and reinstall any apps that you previously had installed.its very stressful
but if it fails just redo it .don't give up.

[raygj]

Originally Posted by raygj

leave likebook on charge for several hours
press the power-button in and hold in ( for about 30 seconds or more) until likebook reboots(this is the standard android reboot procedure for a frozen android system)
if this does not work then

just turn likebook off (power-off)
reinstall 8.1 upgrade

��Likebook Mars (T80D) Android 8.1 Released for Better Apps Installation and Reading Experience!
��Upgrade Instruction Download (Upgrade from 6.0 to 8.1, Only for Mars!!):
��P.S. Upgrade tool should be put into the root directory of your PC.
<https://www.facebook.com/BoyueLikebook/posts/2787619344801982>
take some time and click on the 'comments' link in the first post in the above facebook page and read the various posts/comment (approx.number of 138 comments/questions/solutions, at this time of my posting) in the above facebook/BoyueLikebook/posts/2787619344801982 facebook page.

[tenque]

Well the problem is, my laptop doesn't detect it through USB. I've tried charging it, holding the power button for over 30 seconds, and holding the reset button while plugging it in, but nothing works. As far as I can see, the device is bricked.

[raygj]

Originally Posted by tenque

Well my laptop doesn't detect it on USB, so I'm looking into getting a repair or refund or something. The important stuff was on the SD card anyway, so I can afford to lose the internal storage.

Make sure that you have powered-off the device, please press power-button 10 Seconds to make sure you have powered off the likebook before your start the upgrade procedure.

[tenque]

I tried holding the power button for more than 30 seconds then holding the reset button and plugging it into my laptop several times. Like I said, it just isn't being detected.

[raygj]

Originally Posted by tenque

I tried holding the power button for more than 30 seconds then holding the reset button and plugging it into my laptop several times. Like I said, it just isn't being detected.

Go to the Recovery menu on Likebook Mars:
give this a try.
try a different usb cable

reinstall windows drivers
reinstall windows program into windows C: root directory and run it from there.

run the windows program and do the program steps till the insert usb step.


Turn off the book completely.
usb unplugged

Hold reset button. Press Power Button for approx. 3 seconds and release power button.
Screen starts flickering - let go reset button.

We connect the LB Mars with a cord to the PC.
At this point, the cursor will automatically move down a step to “Reboot to bootloader”

Press the Power button button.

If the drivers are installed correctly , the device must be detected Found One LOADER Device:
more information and pictures/photos in restore.pdf stored in
en12 .zip located at https://mega.nz/file/yug3wKSS#WMb2ZA...Tdw8ZU2l4F7hSM

[tenque]

I finally got around to trying this, but nothing changes and the Mars still isn't detected. I reinstalled the firmware, tried holding the buttons for the right times, but it seems to be completely bricked.
I'm communicating with the seller, will update if/when I get a repair/replacement.