Problem solved with this new great firmware from Ukrania:
http://lbook.com.ua/downloads/V3upda...20090409-2.rar
It is very simple to change the firmware: copy the V3update.bin to your SD-card, then put it back in your Hanlin, turn it off. Then press the + key on the right side and the on/off key at the same time and wait until you hear a beep. Then remove your fingers from the keys, wait until on the screen it tells you to press OK to install the new firmware, then wait a couple minutes, then press OK again to reboot.
Always recharge the battery before changing the firmware!