That's the correct page.
1) Download one of the verified firmwares (with the tick)
2) Download fwpatcher.exe
3) Uncompress firmware
4) Load fwpatcher.exe, browse and open .hex file in the patcher util. Patch
5) Download a MD5 checksum utility, check the checksum matches with the ones on that page *. If it does proceed
6) Copy the .hex file to the iriver,flash as you normally would.
7) Connect to PC, delete .hex from the iriver.
Download daily build, unzip and copy to the iriver.
9) If you want to build database up, download songdb.jar, copy to root. Open DOS command box type in
java -jar d:\songdb.jar d:\
You need Java to do the above. Move the newly created index file to \.rockbox
Disconnect, reboot iriver and should work. To enable DB go to file view and set to ID3 database.
* I'm pretty sure the 1.65 Korean is wrong MD5 checksum, as that's before you patch the file (afterwards its something else)