How to upgrade ET9000 via USB memory stick
Format your USB stick Fat 32 then make /et9000 folder in the root and copy the following 4 files to that location.
Insert USB stick into either USB socket on the rear or front and then Power Off and Power On.
After power-on, ET9000 is detecting USB driver and perceiving the upgrade files existed.
Taking a look at ET9000 informs "image found?" on the left of front panel and pressing "OK" button on the right of it.
ET9000 gets into a state of upgrading the files and displaying "flashing" on it. after complete upgrading, rebooting it.
During upgrading, please don't unplug power or shut down STB.
EDIT: RECEIVERS USING THE LATEST BOOTLOADER ALREADY FLASHED WILL USE A FOLDER NAMED et9x00