Hello everyone !
The drivers are modified by myself, with difficulty 
finally I succeeded .
=========================================================================================
ENIGMA2 FOR OCTAGON SX88-4K UHD with USB Stick
1- Prepare USB Stick FAT32 formatted and extract files recovery : fastboot bootargs apploader usb-update.bin to USB Stick
Example: OpanATV 7.3 RECOVERY image .
2- Connect USB Stick with Receiver
3. Connect Receiver with HDMI cable to Television.
4. Press and keep RESET Button on bottom panel.
3. Connect Power cable (Turn on box).
4. On the front panel you will see "UPG" .. after few seconds STB will show USB
Update Menu.
See Photos:
5- choose Flash recovery image and press OK
well done, your Octagon SX88-4k is an Enigma2 Multiboot
=========================================================================================================
1- first image Recovery openATV 7.3 or OpenATV 7.4 or EGAMI 10.5
Download openATV 7.3 RECOVERY
_________________________________________
openPLI 9.0
________________________________________
openBH 5.3
_______________________________________
_______________________________________
openeight 6.8
you can update the image through the feed
==========================================
_______________________________________
