E700F unlock fail. bypass msl fail . cert write fail

when i try to unlock e700f (5.1.1) in sw showing phone unlocked but when i restart phone its still asking code . i try already 00 123 all fail..

their is common 2nd step is when we had issue like this writing cert .. i try to write cert file sw showing Please Reset MSL first! Writing Certificate failed

also i try reset msl.. its showing reset msl done but nothing happen same like unlocking …

i already search in forum success story about this model.. most of them success they set by ver 4.4.4…
and downgrade is not safe Samsung new security type. i read already 1 member killed his phone…
i try already try everything what he did (until the downgrade) .. here is link about this
http://forum.gsmhosting.com/vbb/f83/…ooted-2057435/

any idea to fix this issue ??