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Backup original rom

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andrew_sh

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2012/12/14 - 11:39

Hello,

Since I cannot find any original roms on the net, can someone instruct me how to backup the rom installed? I would then be able to try custom roms found on the net.

Thanks

admin

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2012/12/14 - 12:00

... and we also may be able to help you by making a custom firmware for the Arnova 7h G3.

If I'm not mistaking, the 7h G3 is based on Allwinner A13 or A10 platform, so you can have a look in the Arnova 7 G3 (Allwinner A10 based) forum for some tips on how to make a dump:

http://www.arctablet.com/blog/forum/arnova-7-g3/

If you like our web site, applications and firmwares, feel free to support our site. Donations are used to pay the bills for our server hosting costs, development tools and purchase new tablets to support.

andrew_sh

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2012/12/14 - 12:11

admin said
... and we also may be able to help you by making a custom firmware for the Arnova 7h G3.

If I'm not mistaking, the 7h G3 is based on Allwinner A13 or A10 platform, so you can have a look in the Arnova 7 G3 (Allwinner A10 based) forum for some tips on how to make a dump:

http://www.arctablet.com/blog/forum/arnova-7-g3/

Yes, it is based on the Allwinner A13. As I understand Arctools is not yet supported on this device. I have Livestudio installed and functioning ok, but I think it is only used to flash, not backup. Will an ADB backup be enough?

Thanks

admin

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2012/12/14 - 12:15

ADB backup of all NAND partition is fine, as you'll read in the Arnova 7 G3 forum. People have been able to dump and restore tablet's this way. Still, on the 7 G3, it is required to have a working ADB connection to be able to restore. If that's not the case, flashing a full firmware image (there is a custom one called Elvish 0.3 on the 7 G3) with LiveSuite is necessary to repair a bricked device.

I'm not yet sure how to build such an image, but will have a look when we have the dump for the 7h G3.

Cheers.

andrew_sh

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2012/12/14 - 12:20

Ok, so do you want me to upload it and send it to you? (It is a branded version, not the stock 7h g3, but 100% the same)

admin

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2012/12/14 - 12:24

Yea, please upload it.

I'll have a look when I have some time, later this week end hopefully.

Cheers.

andrew_sh

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2012/12/14 - 12:49

admin said
Yea, please upload it.

I'll have a look when I have some time, later this week end hopefully.

Cheers.

I have made some progess, I just installed Clockworkmod. I will try to backup using that

andrew_sh

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2012/12/17 - 08:54

Hello everybody.

I have successfully installed Clockworkmod and made a backup using it. Problem is it seems to contain all my personal data on it (accounts pictures etc). I found out because I restored defaults and then restored the rom and after the restore all data was back. I'll try to backup again after I restore to defaults.

In the mean time, can someone please explain why we cannot flash one of the firmware for other arnova devices??? I mean they share the same hardware (all winner a13, same resolution etc)

In other words, if I where to try another rom on this tablet, which would be the first to try? Also, would Clockworkmod be removed after flashing a new rom?

Thanks

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2012/12/17 - 10:30

The problem is they probably don't share 100% of the hardware, there are many components that may differ: touchscreen, camera, accelerometer, ...

If you have a working backup, it doesn't hurt to try your luck with a firmware for another device, but I wouldn't recommend doing it if you have no tested backup of the stock firmware.

Cheers.

andrew_sh

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2012/12/17 - 10:31

admin said
The problem is they probably don't share 100% of the hardware, there are many components that may differ: touchscreen, camera, accelerometer, ...

If you have a working backup, it doesn't hurt to try your luck with a firmware for another device, but I wouldn't recommend doing it if you have no tested backup of the stock firmware.

Cheers.

Thanks, I have restored the backup made with clockworkmod and it worked. The thing is I'm not sure if CWM will be removed after flashing device!!!

Thanks

cichlid

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2013/01/10 - 10:01

Hello,

I now also have the 7h tablet, and would like to extract the stock firmware to be able to restore it if I break something.

I've been trying, by looking at procedures on this site.

The only thing that is working is ADB BACKUP -ALL

It's something, but what I'd really want is an image to be able to restore it via livesuite or something.

Can someone help me along here?

admin

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2013/01/10 - 10:10

I have never user adb backup command. A backup option can be found in this Arnova 7 G3 topic (starting page 4) which has some instructions on how to backup each partition of the tablet using doing a cat of each /dev/block/nand* blocks to a file. It should work the same for the 7h G3 as they share a similar platform (Boxchip Allwinner SoC).

Still, I don't know yet how to reassemble all the partitions to make an img file suitable for Livesuite flashing.

jp25

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2013/04/25 - 00:16

andrew_sh said

admin said
The problem is they probably don't share 100% of the hardware, there are many components that may differ: touchscreen, camera, accelerometer, ...

If you have a working backup, it doesn't hurt to try your luck with a firmware for another device, but I wouldn't recommend doing it if you have no tested backup of the stock firmware.

Cheers.

Thanks, I have restored the backup made with clockworkmod and it worked. The thing is I'm not sure if CWM will be removed after flashing device!!!

Thanks

Hi andrew_sh, any chance of you posting your image/backup? I've bricked my device and I cannot find an image to restore it...

Thanks!

cichlid

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2013/07/25 - 10:11

Hello,

My attempts failed to create my own firmware backup.

Has anyone else made some progress, I'd like to 'experiment' a bit more with rooting but not when I'm not sure I can restore in case of dissaster.