There are 2 ways you flash boot with the ET8500, with Single-Boot or Multi-Boot, I think as default WoS flash Single-Boot.
Even with Multi-Boot, I don,t think you see both images until you try USB flashing a second image, (It's a long time since I first set up my boxes)
If you have flashed once and you have Multi-Boot then when it detect an flash image on a usb, it will then ask you if you want to flash OS1 or OS2
Once flashed it will then go through the normal process when you reboot of asking which image to select.
I have code on my image so that in ImageManager settings I can set Multi-Boot and then I can couch flash either OS1 or OS2, but then I regularly change images and it's nice to keep the last working image just in case I mess up (it does happen)
Gigablue Quad 4K & UE 4K
.........FBC Tuners:
------------------> GT-Sat unicable LNB to 1.5M dish(28.2E)
------------------> Gigablue unicable LNB to 80 cm dish(19.2E)
.......................> FBC & DVB-S2X into 90cm dish (27.5W) Opticum robust Unicable LNB
AX HD61, Edision Osmio 4K+, Zgemma H9Combo, Octagon SF8008 , gbtrio4k, h9se using unicable ports
Zgemma H9 C/S into Giga4K
Thanks twol. Well I tried USB flash it and it did not offer me any choice and overwritten my main image.
Gigablue Quad 4K & UE 4K
.........FBC Tuners:
------------------> GT-Sat unicable LNB to 1.5M dish(28.2E)
------------------> Gigablue unicable LNB to 80 cm dish(19.2E)
.......................> FBC & DVB-S2X into 90cm dish (27.5W) Opticum robust Unicable LNB
AX HD61, Edision Osmio 4K+, Zgemma H9Combo, Octagon SF8008 , gbtrio4k, h9se using unicable ports
Zgemma H9 C/S into Giga4K