Hello,
My ebook is based on rk2738.

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d1121.jpg at Free Image Hosting
The firmware SKYTEX primer don't work on it !!!
I have update my ebook with RK28Upgrade v1.27
I have tweak the setting.ini in Upgade Tool folder to match my device.
Code:
[DEVICE_ID]
VID=0x2207
PID=0x273A
I used rk28usb driver and change in rk28usb.inf PID and VID to match my ebook value.
If you have "download boot fail" error message REBOOT your computer !
Finally i have restore my original firmware.
Fortunately have backup the 3 partition of my ebook.
To make firmware *.bin file i go to my linux computer and make :
Code:
mkdir myfirmware
sudo mount -o loop Primer DRM firmware.img myfirmware/
cd myfirmware
sudo rm -rf *
sudo cp -r ~/SVG-EBOOK/157Mo/ ./
cd ..
sudo umount ./myfirmware
My backup firmare
2shared - download Ebook-2738.img.zip
If you failed update don't remove battery just short pins 29 and 30 on Hynix and plug usb.
It is describe in post :
Rockchip DEAD Player Recovery Guide