phype:

A fresh trunk build for the VGV7510KW22 aka o2 Box 6431 fails to flash on the brnboot Web interface
with the "file verification failed" message. This also applies to all (new) prebuild LEDE/OpenWRT images currently available.

brnboot Version is V1.08.02

It has been working on 30 June 2016, were i built my last image for that device from trunk.

I dont know if this is a "toolchain" or "base system" issue, but since it is probably a image creation bug i choose toolchain.