No device is perfect, and the H2 Mini 4 has flaws even with the update:
Copy the file to the root directory of your USB drive.
: Copy the software file to the root directory of a FAT32-formatted USB flash drive. : Insert the USB into the receiver, navigate to Menu > Setting > Software Upgrade , select your file, and wait for the process to complete.
(sometimes listed under "Course Menu" or "File List" in local versions).