Hey, it is from DiyPDA.com, the CHS WM6.1 19209 Kitchen.
In the RUU folder, there is an clean CHS ROM.
The new OS 19209 is very stable and fast, enjoy it.
Download:
http://www.fs2you.com/files/b14e9257...-0014221f3995/
The 19209 XIP is from DCD's Kitchen 1.04 with a bit modifing.
The 0804.mui in SYS is from CHT9000
The 0804.mui in OEM is from DiyPDA
Thanks to DCD and no2chem.