Paolo, not sure what V2 was, but i have done my T8 SE and the device tree, for the T8 SE (S905x and 2G ram), is gxl_p212_2g.dtb
I was able to restore, from the T8 SE LibreELEC, using the Indigo Fusion Backup/restore addon in LibrELEC then loading the addon into CoreELEC to restore. So there...