HFW 4.84.2 (the latest version of the system software is already installed there is no need to upda)

Dears;

When I tried to Install HFW 4.84.2 over OFW 4.84 I got the follwing messagte"
"the latest version of the system software is already installed there is no need to update"

I tried to Redownload the PUP ,and all the files , and also reformatted the USB flash drive ,
and The same happened when i tried to install from Recovery mode.

is there any help? my model is CECH 4303 A , SuperSlime

thank you