This is from another webpage to same maybe it helps:
Re: A8PSIM ' ro1 no ca found '
hiya you will get r01 no ca found when you use the wrong bootloader !!!!! if your using a A8P sim you need to use the genuine 84ssl bootloader !! download the bootloader in genuine 800se downloads !!!
go to Downloads | dream-multimedia-tv.de
download Dreamup 1339 and go down to 800se downloads and download the VCP DRIVER
this is what i had to use too sort out mine , the image i used was the digital worldz v1.1 also the dreambox uk one works aswell both good !
you need to use the dream up so you can get your ip address showing again then open up your flashing page and flash a image , then open another flash page and flash the bootloader THEN REBOOT !
DONT FORGET TO FLASH WITH SSL84 BEFORE REBOOTING
I have used 1339 dream up for my 800se but didtn work . then i used sunray 4 flashup and it works fine.
look there too: