Problem with auto rotate

I have sometrouble with auto rotate of my screen, if it stay on auto rotate it turns everytime to the wrong direction.
This happenedafter I flash a new firmware in with “flash10.1-android2.2.rar”.
This was necessarybecause my tablet did not start up and there was no recovery image.
Every thingworks fine except auto rotate, I have to switch it to manual to keep it stable.

Is theresome way to calibrate the auto rotate, or is there any app which can do this.

See myspecs below;

SAWEE PAD 10A

Device
Brand:generic
Manufacturer:unknown
Model:wwe10
CPU Hardware: IMAPX200 (volgens de doos en ander prog (platformIMAPX210) - 1 GHz)
CPU: ARMv6-compatible processor rev 5 (v6l)
CPU-ABI:armeabi
RAM: DDRII256MB

OS
VERSION:ERE27
RELEASE:2.1-update1 V2.6:#3682
KERNEL:2.6.32.9
SDK: 7
FIRMWARE:eng.infotm-sqa-desktop #78 (20110315.142804)
firmware2.1-update 1 V2.6:#3682

DISPLAY
DIMENSIONS:1024x600
DENSITY:Medium (160 dpi)
LOGICALDENSITY: 1.0
DPI X:159.5681
DPI Y:160.42105