Let's go, open this link and follow the instructions/options.
http://sunriser.ledaquaristik.de/factory.html
Solution 2
If the above procedure is unsuccessful, you can alternatively open the SunRiser 8 and remove the MicroSD card.
See a photo at:http://srdemo.ledaquaristik.de/img/sdcard.jpg
Attention: Before you start, disconnect the power supply and disconnect all plugs of the LEDs.
Replacing the microSD card does not affect the guarantee or warranty, we consider this as regular use of the unit.
Now reformat the microSD card (FAT32, no quick formatting) and then save the firmware file "NEW.BEE" on the reformatted card. (You can also use another/new SD card of any size (from 2GB)).
Download the latest SunRiser 8 firmware ("NEW.BEE") at: http://sunriser.ledaquaristik.de/NEW.BEE.
Then insert the card back into the SunRiser 8 and close the unit. The firmware will be installed automatically when the unit is switched on and the SunRiser will restart. After the restart you can read in your personal backup file in the usual way.