Default [Q] D801 can't stock TOT

sorry for my english,hope you guys could understand my situation

i'm using T-MOBILE G2(D801) 4.2.2,and tried to flash the g3rom.I used clockmod recovery and after flashing,i stuck at LG logo.

then i tried to stock the original tot firmware,but it said "DOWNLOAD FAILED" and "DEVICE MODEL IS DIFFERECT"

but the last time i do the same thing it worked for my phone,i dunno why it doesn't work this time

so can anyone help me?thank you so much