epg5210 won't le my reciever boot to enigma2

Hi everybody,
everything is in the title, i have a samsat linux 1 (spark and enigma2 in dual boot), recently an error occured and my reciever won't boot to enigma2 using epg5210 code, it is always possible to do it by pressing buttons on the front of the reciever, is there any idea about that,

Thanks in advance