how to upgrade to openpli?

hi i just bought a nbox 5800sx and was wondering how i would go about putting openpli on it i bought the box from ebay and it was meant to be pre-installed but its not theres only enigma 2 on it all i know from what i've been told by the seller it has two uboots freebox and b4t and Main uboot preload in A20 and 2nd uboot(safe) preload in A19 and A18 i know how to upgrade via usb but i don't want to upload the wrong file any help is greatly appreciated thanks

Quote from faza

Image open pli nand memory
openpli_adb5800_v821_nand_29_04_2013.zip

Code

http://www.enigma.gbzl.pl/adb_openpli/openpli_adb5800_v821_nand_29_04_2013.zip

Image open pli on pendraiw 4gb
openpli_adb5800_v821_pen_29_04_2013.img.zip

Code

http://www.enigma.gbzl.pl/adb_openpli/openpli_adb5800_v821_pen_29_04_2013.img.zip

Thanks very much mate i've put nebula v3 on it stuck on how to put my cline on mgcamd 135 now this box is doing my head in now put the line on it through dcc but will it clear the channels no don't know where i'm going wrong any pointers please mate and what image would you recommend