hello fellow DHD user, i have a problem here.
phone freeze at sudden, press power button no respond, phone like dead but i tried call from another phone can hear ringing (caller side) while the DHD is "dead", means the phone is still running

have to force close by taking out battery, sometimes it just freeze while im using it, the screen just stuck right there.

has anyone face this problem before?
sometimes after i restart phone the time will back to january 1980...im wondering is this hardware problem, emmc burn?
my DHD warranty going to expire next month, i had previously root and install custom gingerbread 2.3 rom
i forgot what method i used to root but remember it was before htc OTA to lock rom, i flash from froyo 2.2 stock rom

question now, what should i do to unroot/en-s on /radio s- on my phone?
because i root my phone way before htc lock rom is there any simpler method?