solved: TI2 desktop arrived! But can't upgrade/downgrade firmware...

[ElMute]

Hi all,

i have a virus TI2 desktop, i when i have recieve the unit, i have install the OS3 in my virus, and this update work fine.

but in the OS 3 the arte too many bugs ( automations ... ) and i want to downgrade my virus. but after my uninstall of version 3, impossible to downgrade my virus
when the install arrives where she must update firmware the install freeze and nos reponse from my virus, her mode switch to USB update mode but no install of firmware 2.7.5 ;(

i have contact access and i wait the ansmwer

(sorry for my very bad english)