Need Help Encore Tablet Rockchip rk2808sdk Bricked

[Isaacata]

I Bricked my Encore tablet red led 9v batch 3 Android 1.6 kernel version 2.6.25 Rockchip version 1.10.16 (MID0701) model numer rk2808sdk i flashed with Rkandroidtool unsuccessfully just turn up the logo and does not Advance...

I have installed several firmware
Among them

0806 EN
0802 CN
Apad rk2808 v4 tim edition

Someone suggest what can i do???

The tablet is this
Multimedia | Mobile Internet TouchPad