Unbrick Kits for Amlogic Based Nextbooks - Support Thread

[shaunmt]

What are they:

The kits below contain pre-made disk images to create Rescue SD Cards for the corresponding Nextbook tablets. These should only be used if you are unable to access recovery mode by other methods, for example, if your bootloader is damaged or if you've flashed an incompatible ROM.

Unbrick kits for additional models will be added to this post in the future.

How they work:

A rescue SD card contains a modified bootloader embedded in it's boot sector. When an Amlogic processor boots up, it always looks a bootloader in the external SD card first. This allows your tablet to boot entirely from the SD card instead of from internal NAND memory. The files on the card then wipe your internal bootloader, boot image and recovery image, and start recovery from SD card so you can flash a new ROM.

How to create the Rescue SD Card:

Download the corresponding unbrick kit for your tablet. Make sure you get the right one. DO NOT attempt to use an unbrick kit for a different model. If an unbrick kit isn't available for your tablet, wait until one is. If you're not sure, ask. Someone here on the forums will be able to answer your question.

Unzip the unbrick kit.

Inside you will find instructions for windows or unix. Choose one and read it entirely and carefully before beginning.

Files are named in the following format: Unbrick_Kit_"Model"_"Board".zip

check board in ro.product.board, ro.build.product, ro.build.description or ro.build.fingerprint

Downloads:

Unbrick Kits for Amlogic Based Nextbooks - Download Thread


ShaunMT

[shaunmt]

New Stock Based Next8HD8G ROMs Coming Soon

FYI

New ROMs based on stock build dates of 10-28-13 for both Next8HD8G boards will be following very soon.

ShaunMT

[Sumphlet]

Woohoo! You da man!

FYI

New ROMs based on stock build dates of 10-28-13 for both Next8HD8G boards will be following very soon.

ShaunMT

[rbitting]

will it boot without stockromon ext card

Not having ant luck. but do not have a stock rom for the Next8HD8G-NXM8000NBD_WMN. Just Staying black screen :-)

FYI

New ROMs based on stock build dates of 10-28-13 for both Next8HD8G boards will be following very soon.

ShaunMT

[shaunmt]

Not having ant luck. but do not have a stock rom for the Next8HD8G-NXM8000NBD_WMN. Just Staying black screen :-)

Yes, it should boot to recovery even if you don't place a ROM file on the SD Card.

What size SD card are using? What files are on it after creating the Rescue SD Card?

ShaunMT

[rbitting]

No Luck on Rescue

Using 8 G sd.
the files on it are:
aml_autoscript
uImage_recovery
u-boot.bin
uImage

I figured power + volume down would boot into cwm but no love. Just staying black. Bricked when I flashed old rom and figured boot looder was toast. originally though I did root it with the recovery 3e and kysier

Yes, it should boot to recovery even if you don't place a ROM file on the SD Card. serial is YFG1013042441

What size SD card are using? What files are on it after creating the Rescue SD Card?

ShaunMT

[shaunmt]

Using 8 G sd.
the files on it are:
aml_autoscript
uImage_recovery
u-boot.bin
uImage

I figured power + volume down would boot into cwm but no love. Just staying black. Bricked when I flashed old rom and figured boot looder was toast. originally though I did root it with the recovery 3e and kysier

Have you tried it more than once? Occassionaly, I've had trouble getting it to boot on the first try.

Also continue to hold both keys until recovery appears.

[rbitting]

Still Trying to Unbrick

Noticed that img file is 1.9 g and sdcard is formatted to 1 g with the 4 files on it. tried with 8 g and 64 g cards. Is that what I should see??

Have you tried it more than once? Occassionaly, I've had trouble getting it to boot on the first try.

Also continue to hold both keys until recovery appears.

[pabeader]

Have you tried it more than once? Occassionaly, I've had trouble getting it to boot on the first try.

Also continue to hold both keys until recovery appears.

Sounds funny, but try holding volume up and then adding the power button.

[shaunmt]

Noticed that img file is 1.9 g and sdcard is formatted to 1 g with the 4 files on it. tried with 8 g and 64 g cards. Is that what I should see??

Yes, that is normal... the remaining space consists of the bootloader in the boot sector (in front of the mounted partition.) and some unused space at the end (which I should have trimmed off to make the download faster).

ShaunMT

[shaunmt]

Sounds funny, but try holding volume up and then adding the power button.

Couldn't hurt to try... I forgot that some models use volume+ instead of volume- to boot recovery.

ShaunMT

[roadkill]

q

Couldn't hurt to try... I forgot that some models use volume+ instead of volume- to boot recovery.

ShaunMT

on mine some times i have to use vol + some times vol- to get into cwm recovery wierd

[rbitting]

Afraid it is a deep brick and dead!

nothing I do works time to put it away! Perhaps someone will find a trick,

Couldn't hurt to try... I forgot that some models use volume+ instead of volume- to boot recovery.

ShaunMT

[roadkill]

q

nothing I do works time to put it away! Perhaps someone will find a trick,

whats not working for u

[rbitting]

No boot with rescue sd

made sd but still no boot. tried all possible combos of power and volume

whats not working for u