if your tv has port 480i like DVD (yellow/ red / white) and if your 322 has that cable , plese try that port not HDMI ,
for update file try this ,
go here , http://soft.infomir.com/mag322/release/2.20.07r2/
download this files to FAT32 formated USB stick / create mag322 folder on root and copy only this 3 files
- Bootstrap , imageupdate , uImage_mag324.clean
than plug back to box , power reboot box ..hope you get some result
