Trying to edit a rk3288 7.1 rom

[alysia00]

I have a bunch of these rk3288 units that are used for reading temperature. I need to find a way to delete the apk that's inside the firmware img file and put my edited on in there. The issue is I haven't found any useful tools to do so. Sergio's tool doesn't work right, it only can extract system.img which I don't need. The file I need to edit is vendor.img which I haven't found any tools to extract it and repack it. Or any tool to repack the split files back into one firmware img. Sergio's tool won't do it for some reason. My other guess was to install a custom recovery on one tablet and make a nand backup from one that I already got setup and flash the rest with it. No luck with that either, since anything I flash just gets stuck in boot. I would appreciate if anyone got any ideas on this matter. Here's the link to the rom file: https://drive.google.com/file/d/1HX0...ew?usp=sharing

[gefattern]

I have a bunch of these rk3288 units that are used for reading temperature. I need to find a way to delete the apk that's inside the firmware img file and put my edited on in there. The issue is I haven't found any useful tools to do so. Sergio's tool doesn't work right, it only can extract system.img which I don't need. The file I need to edit is vendor.img which I haven't found any tools to extract it and repack it. Or any tool to repack the split files back into one firmware img. Sergio's tool won't do it for some reason. My other guess was to install a custom recovery on one tablet and make a nand backup from one that I already got setup and flash the rest with it. No luck with that either, since anything I flash just gets stuck in boot. I would appreciate if anyone got any ideas on this matter. Here's the link to the rom file: https://drive.google.com/file/d/1HX0...ew?usp=sharing

Hi ,

why do you think they are in "vendor.img" ??? ,

greetings / gefattern

[mo123]

Preinstall apps are in system.img in < Android 7, in vendor.img in Android 7, in oem.img in Android 8/9 and in super.img(still to confirm) in Android 10.

[alysia00]

Hi ,

why do you think they are in "vendor.img" ??? ,

greetings / gefattern

because they're not in system.img I already checked so I know they're not there. The apk is around 140mb so is the vendor.img so I know it's in there.

[alysia00]

If I could just take that apk out and put mine in there and repack the img then I can use Factory Tool 1.63 which the version that works with this tablet to flash them easily 10 units at a time.

[mo123]

If I could just take that apk out and put mine in there and repack the img then I can use Factory Tool 1.63 which the version that works with this tablet to flash them easily 10 units at a time.

Please post the link to the app you want to use and the one you want removed.
Maybe I can try to do it but don't know if it will work.
Do you have a link to this device, never heard of IOT-RK3288-X before?

[alysia00]

Please post the link to the app you want to use and the one you want removed.
Maybe I can try to do it but don't know if it will work.
Do you have a link to this device, never heard of IOT-RK3288-X before?

http://www.smdt.com.cn/support/download.html?CateId=23

This is the page of the manufacturer, it uses a baidu to download the modification tools but I don't have a Chinese number to sign up. It has firmware tools and firmware tools.
Here's also the link the new apk: https://drive.google.com/open?id=16P...HzNgofTopNad1A

[gefattern]

Hi ,

only for one App , i would do it simple with "root" , one by one ,

for sure you already would be ready ,

greetings / gefattern

[alysia00]

They're all already rooted out the box.

[mo123]

Firmware couldn't be unpacked and link to the app doesn't work, so couldn't help.

[freddy]

I have a bunch of these rk3288 units that are used for reading temperature. I need to find a way to delete the apk that's inside the firmware img file and put my edited on in there. The issue is I haven't found any useful tools to do so. Sergio's tool doesn't work right, it only can extract system.img which I don't need. The file I need to edit is vendor.img which I haven't found any tools to extract it and repack it. Or any tool to repack the split files back into one firmware img. Sergio's tool won't do it for some reason. My other guess was to install a custom recovery on one tablet and make a nand backup from one that I already got setup and flash the rest with it. No luck with that either, since anything I flash just gets stuck in boot. I would appreciate if anyone got any ideas on this matter. Here's the link to the rom file: https://drive.google.com/file/d/1HX0...ew?usp=sharing

Great Post !!!!!
made me think
This is my theory only and could be totally incorrect


CPU waits for those commands in bootload sequence.
The vender image/partition is in the system image if you change anything bootload sequence is fffffffffed
The vendor partition will contain code that is non android open source protocol.
I dont think you can extract the image and replace with your image again those commands are not open source
CPU doesnt care it just wants to execute and detect tempature

You would have to clone the ROM and embedd your code in vendor partition .
Or compile your own ROM

gjwa yzma

[alysia00]

Well turns out I just needed the firmware tools from that website. Was able to unpack the firmware and everything and can repack it fine.

[freddy]

Sweet !!!!

And you had no problems editing vendor partition
Replace with your drivers/binary/paramiters
Repack
Good to go
Wow

This is why iam Theory and Analyitcs
I suk at practicle
I suk at code
And my Theory is not so great either
LOL

Happy Testing