i have a k810i and the problem now i cant on the phone..when i press on button nothing happen but at the infrared there got blinking light came out like blink 3 or 4 times then it gone..why???

Are u sure battery is charged. If so I'm afraid your erom is damaged. Can phone be detected by XS or SETool2lite by holding 2 and 5? If so post log.

it detect using setool 1.08..but it show empty on cda version,language pack,mapp....how do i flast the erom?

Could you post the identify log?
Press Unlock/Repair in SE Tool lite and connect the phone while holding 2+5.
Do another identify and see what happens. You might have to flash the firmware afterwards (MAIN,FS, Custpack).

Try setool2lite 1.11: 1.08 isnt for db2020

how do i repair the eprom?where can i get the file?and also gdfs?what program should i used...tq

If your GDFS is damaged and you don't have a backup, then don't bother looking for a GDFS file. Your GDFS is 100% unique to the phone you own... a different K810 will NOT have the same GDFS. To flash a new EROM, download a EROM file from topsony, or get one from the firmware link here. Then open XS++, connect using the 2+5 method (aka Dead Boot method), then put the EROM in the MAIN firmware box. Then press flash, and it'll flash the EROM to your phone.

i try using XS++ but its just say open port ok dats all..just stop there..btw where can i download the erom...any links?

can someone reply me..cos i dont know what to do...thanks

If your erom is dead then try reflashing with setool..

Connect with keys 2+5 and press repair button

Wally Dog has already told you where to find them, learn how to read