Hello ist my first post ! My name is CrazyXbox360

nForce4 SATA - MSI K8N Neo4-F
I have flash my Samsung TH-H943 ms25 wiht the Xtreme42b but i can't flash it back to the orig !
I have first back up my orgi whit mtkflash r /Backups/orgi.bin ! Restart !Then i flash the Xtreme42b whit mtkflash w /samsung/xtreme.bin on XTREME SATA Master Flash OK restart my PC ! Xbox360 Power off ! then i want to play on my xbox360 a orig game es. N3 or PGR3 but the xbox say i must to play this Disk put in to a Xbox360 ! Okay i try to flash back to orig but it works ! i type mtkflash w /Backups/orig.bin on XTREME Pri Master Enter then he Stop ! it did not pass anything ! i press Esc he show me 50 E70 or 00 E70 i have tried a lot of thing but it ever he same ! Boot Disk created whit Xtreme Boot Maker !
Its my Samsung RIP ??

Which can and which I must make for reflash or repair ?

What is Enable0800.iso ?

Please help me !
I am from germany my english is not perfect !