ZTE B860H: Getting Armbian into It
A step-by-step guide to installing Armbian on the ZTE B860H V1/V2 set-top box without rooting it first. The process requires a microSD card, a special HDMI boot dongle, and flashing both the Armbian image and the HG680P U-Boot bootloader. The guide also covers verifying the dongle with i2cdetect, booting into Armbian, making U-Boot permanent, and installing to eMMC.
Keep in mind that the indicator MUST STAY on orange LED light for as long as 15 seconds (it mustn't turn green on this phase, If it did, Then you're flashing it wrong!).