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ClockworkMod (CWM) Recovery easy install for RK3066 and RK3188 -- TWRP/CWM Flash-Tool and root for RK3288

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Wifi issue with unknow RK3026 tablet
If I try to turn wifi bar on it will automatic slide to off position. It says that "turning wifi on" but nothing happens.
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Vohukain
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2014/08/25 - 10:42
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Hi!
I have an android tablet but I don't know exactly what device it is. Here is everything what I know:

-Brand: Rockchip
-Model: Q8
-Android: 4.2.2 (SDK: 17)
-Kernel: Linux version 3.0.36+ (lijian@ibm-0A) (gcc version 4.6.x-google 20120106 (prerelease) (GCC)) #69 SMP PREEEMPT Thu Jan 16 15:50:05 HKT 2014
-Number of the version of the software: rk3026-eng 4.2.2 JDQ39 eng.lijian.20140107.155201 test-keys
-CPU Model: Rockchips Cortex-A9 (Dual Core, freq: 312-1008MHz)
-Renderer: Mali-400 MP
-Resolution: 800x480
-Rear and front camera: 1,9 MP (1600x1200) and 0,3 MP (640x480)
-Ram: 512MB
-System storage: 0,98GB
-Internal storage: 1,90GB
-GPU version: OpenGL ES 2.0

Also I got some manual with it but there was only "MID Android". Tablet looks like THIS

First I rooted my device with chinese program called Vroot. Then I installed TWRP (I haven't find working CWM for my tablet) and I made backup with it. Then I tried to flash this rom (made by Cash1977) but I didn't flash it with kernel partion so I ended up to a bootloop. Then I tried to restore my TWRP backup but the backup was not proper. The system part size was only 4kt. When I did restore my backup TWRP said "no os installed are you sure you wish to reboot". When I rebooted it ended up to a bootloop again.

Then I flash with Cash's rom and this kernel (3.0.36+ (lijian) #69) and device booted up nicely. Only porblem is now that wifi is not working. I tried also this rom (made by Oma) with same kernel but wifi didn't work.

The issue: If I try to turn wifi bar on it will automatic slide to off position. It says that "turning wifi on" but nothing happens. When I go settings>advanced I noticed that mac address is unavailable. Also when I go settings>about tablet>status I found put that imei is unknow.

I guess that I can fix wifi issue if I can find these files FOR MY DEVICE:

- libhardware.so
- libhardware_legacy.so

-8188eu.ko
-8188eu.ko.3.0.36+
-8192cu.ko
-8192cu.ko.3.0.36+
-rkwifi.ko
-rkwifi.ko.3.0.36+
-wlan.ko
-wlan.ko.3.0.36+

Another way to fix wifi would be flashing 3.0.8+ kernel to my device because OMA's rom uses 3.0.8+ wifi modules. I don't know where I could find 3.0.8+ kernel for my tablet.

Can anyone help me?

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Oma7144

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2014/08/25 - 11:00
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Does the TWRP backup contain the genuine kernel?

- Oma -

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Vohukain
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2014/08/25 - 13:08
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Here is the whole backup except data part: https://www.dropbox.com/sh/tyocuge5nyaytys/AAC00QmNfmU73T4A4e8idxQfa?dl=0

Sorry but I don't know what genuine kernel means. I'm very new with custom things. Someone also said this when I posted my TWRP backup at XDA:

"what I noticed was that what the boot.img you posted was mounting as system, recovery was mounting as data"

I don't know what that means.

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2014/08/25 - 13:24
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Ok, here is your kernel: Linux version 3.0.36+ (lijian@ibm-0A) (gcc version 4.6.x-google 20120106 (prerelease) (GCC)) #69 SMP PREEEMPT Thu Jan 16 15:50:05 HKT 2014.

Check out with the Roverpad build. Just replace the kernel in folder rockdev/Images.

- Oma -

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Vohukain

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Vohukain
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2014/08/25 - 13:49
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Thanks your quick reply but roverpad build (Oma RK3026 Roverpad TRC7 JB 4.2.2 (341.1 MiB)) didn't help with that kernel you post. Still the same wifi problem. Any other ideas?

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2014/08/25 - 13:52
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Let me have a dmesg log.

Boot tab fresh and try 2 times to enable/disable wifi. Then do the log.

- Oma -

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2014/08/25 - 14:09
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I will do that when I get my tablet back to alive. I tried to flash some 3.0.8+ kernel and device doesn't boot and AndroidTool doesn't regonise it.

EDIT: Tablet is back to alive. I will do dmesg next

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2014/08/25 - 14:12
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Ok, now it is hard work:

- Oma -

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Vohukain
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2014/08/25 - 14:23
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Is this how I can pull out dmesg file. I write this when I "open" adb connection.

su
dmesg >/mnt/sdcard/dmesg.txt
logcat -d -v time >/mnt/sdcard/logcat.txt

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2014/08/25 - 14:25
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Yes, but you need a running firmware.

- Oma -

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Vohukain
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2014/08/25 - 15:02
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Here is dmesg: https://www.dropbox.com/sh/rn4gx8u9fv2llk0/AAB3fJgmiJ4D2kCe_8lLCFc_a?dl=0. I didn't succes to pull out dmesg file so I put in adb this: "adb shell dmesg" and I take print screen. Number 1 pic is last and number 2 is second last and so on.

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2014/08/25 - 15:09
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What is it? Build and kernel pls.

- Oma -

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Vohukain
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2014/08/25 - 15:50
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Same what you post earlier. This kernel (Linux version 3.0.36+ (lijian@ibm-0A) (gcc version 4.6.x-google 20120106 (prerelease) (GCC)) #69 SMP PREEEMPT Thu Jan 16 15:50:05 HKT 2014) and this rom (Oma RK3026 Roverpad TRC7 JB 4.2.2 (341.1 MiB))

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2014/08/25 - 15:54
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Ok, that means your tab is back?

Pls do a clean install incl. eraseIDB and let me have the logs.

- Oma -

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2014/08/25 - 16:02
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Yes my tablet is back :). I flash roverpad firmware again and clear IBD and then post dmesg again.

EDIT: I did erase IBD but now I can't flash any files because the parametre files is not working with my device. I used parametre file form roverpad folder

EDIT: I got it working again. I'm now flasing roverpad

EDIT: I can't do proper clean install. When I erase IBD and flash firmware the device doesn't boot up properly. It is booting but even launcher is not working. Only way I can boot up nively after erase IBD is flash boot.img, system.img and kernel.img again.

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