Here are the steps i did.
1. Try to pull out the battery and insert it again
2. If nothing happens, just leave the battery inserted with the red
light blinking then press simultaneously on your key pad the ALT,
SHIFT/aA button and DEL
3. If nothing happens again, then try to press again ALT, SHIFT/aA
button and DEL twice in simultaneous motion (this is the HARD RESET for
BB phone)
4. Pull out the battery after doing the reset
5. Connect your phone (without the battery) to your pc with the usb
cable, wait until the red light appears again and for your pc to detect
it.
6. Open your Desktop Manager, it will pop up an error message just press ok or retry.
7. Your device manager must detect your phone with a label of USB:
Blackberry-0 (it will not show your phone's model for the mean time coz
you did a hard reset)
8. On your Desktop Manager, you must see Device Connected (PIN):
Blackberry-0, then go to Application Loader then Update Software.
9. During the Initialization of JV, you will be prompted to connect your
device/phone although it is already connected, DO NOT REMOVE THE USB
CABLE, just insert the battery then press retry.
10. Then you're done! it must continue load the necessary OS and files
then wait for atleast 30 mins to finish the restore. you must see a
loading bar with blackberry logo in your device after you inserted the
battery and press the retry.