my rhod500 freezer at startup

[binht611]

my rhod500 freezer at startup in recent roof and kernel.
when boot in to home screen, it freezer at here and report no servise in operator. the device still respose but very very slow.
update roof and kernel no fix this problem
try older roof and kernel no fix this problem
reformat and replace sd card still no fix.
i try to flash another radio and rom but no luck

now, i try frx03+11/15 roof+ 12/04 kernel but still no servise and system very very slow.
who can help me to fix it please!

my english is very bad. i hope everybody understand me and help me to fix this problem