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HomeClockworkMod (CWM) Recovery easy install for RK3066 and RK3188 -- TWRP/CWM Flash-Tool and root for RK3288
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2014/02/12
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Hi!
I try to change firmware from stock to OMA Caynogen.
Download Kernel for u9gt3, change kernel.img.
Erase, Run. Everything looks fine.
But when tablet restarts it's always going to clockworkmode.
I try to apply int and ext fixes but no luck.
I found error - Can't mouunt /cache directory.
Of course when i trying to format cahce or data partition - i see next error:
format_volume: make+ext4fs failed on /dev/blockmtdblock7
Please help!
Moderator
Firmware Guru
2012/11/19
Offline
you have to apply format_nand.zip fix from external sdcard at first boot in CWM.
Per aspera ad astra, we rock the Tablets !
If you like our firmwares, please consider making a donation to support our work.
Thank you!
2014/02/12
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I have some progress with this issue. I write stock recovery and tables start up succesfully, but touch doesn't work and it immediatly switch off when i disconnect usb or power cord.
Moderator
Firmware Guru
2012/11/19
Offline
Start from the beginning.
Complete Erase, flash and then apply format_nand.zip on first boot. If you don't do that, it will not work.
Per aspera ad astra, we rock the Tablets !
If you like our firmwares, please consider making a donation to support our work.
Thank you!
2014/02/12
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Could you help me - how start standart recovery mode? No CWM!
2014/02/12
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Ok Hold +Â
plugin power
waitingo logo
release +
wait until android with red anchor
Press power and one time +
now you in stock recovery.
But anyway format nand doesn't work in stock ercovery and in CWM DATA and CACHE partiotions not mounted.
I wiped data and cache in stok recovery but tocuh still doesnt work. 
Moderator
Firmware Guru
2012/11/19
Offline
As I wrote, you have to begin from the starting point.
Change kernel.img in rockdev/image folder, don't use you're own recovery.img, use the one that Oma provided.
Copy format_nand.zip to a sdcard and insert it into tablet.
Then make a complete flash, including eraseIDB first, then click Run. It should now boot into CWM. Apply format_nand.zip thru CWM and choose reboot. Now it should boot up normally.
Per aspera ad astra, we rock the Tablets !
If you like our firmwares, please consider making a donation to support our work.
Thank you!
2014/02/12
Offline
I tried what you propose.
Script can't wipe data because data and cache not mounted. It's pointed to wromg mtblock device.
It's shoild be like mtdblock5 and point to mtdblock6.
this i found on this forum (related to u9gt3 too)
Recovery seems to search /cache on mtdblock6 but in stock rom /cache is on mtdblock5.
Moderator
Firmware Guru
2012/11/19
Offline
okay, then we have to try second method of Oma..
change recovery.img to this one:
http://crewrktablets.arctablet.com/?wpfb_dl=1036
It should boot up and format all that is needed. After that you can replace recovery.img with the original one and flash only the recovery.img (tick parameters too).
Per aspera ad astra, we rock the Tablets !
If you like our firmwares, please consider making a donation to support our work.
Thank you!
2014/02/12
Offline
I follow your instructiosn and now i have tablet with CWM anf booted to Oma Cyanogen.
But CWm still can't mount /cache and /data
Gravity sensor works fine, vol and power ok.
BUT tablet switch off when i disconnect usb or power.
And touch still doesn't work.
2014/02/12
Offline
I tryed u9gt4 kernel and u9gt30 - of course problem with screen wrong size.
But tables works without power or USB cable, touch still not working.
Conclusion u9gt3 and u9gt3s - have some differences.
And need different kernel.
Moderator
Firmware Guru
2012/10/06
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Per aspera ad astra, we rock the Tablets !
If you like our firmwares, please consider making a donation to support our work.
Thank you!
2014/02/12
Offline
Ok, tablet start working without USB or power.
But touch stil doesn't work.
I will retry whole porocedure and inform you.
2014/02/12
Offline
I reflash with stock recovery.
Recovery automaticaly wipe data cache and sdcard (achtung!!!)
But touch still not working
Moderator
Firmware Guru
2012/10/06
Offline
It seems there are different revisions in the field. What is your tabs serial-number?
Here is a kernel for S/N U9GT3S16GBXXXXXX : http://crewrktablets.arctablet.com/?wpfb_dl=1483
- Oma -
Per aspera ad astra, we rock the Tablets !
If you like our firmwares, please consider making a donation to support our work.
Thank you!
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