sorry , but i using lg utis for km555 in 2010,
hower , it's have some error and i not found one 4rum for km555
In vietnam , km555 is cookie 3G , for your country is clubby ::)
if you see error " Seek CUST error " then you can't upload cust to phone . don't try again , or upgrade fw , because it's not fix.
Only Flash with GSM muti v3 , then error is fix .
;D