The firmware change cannot be reversed remotely. The only way to go back to TiVO firmware is to have the box replaced with one pre-loaded with TiVO. TV services will have to then be re-provisioned on your account with the replacement box or as soon as you boot up it will convert again. If you migrated voluntarily you are unlikely to find any route back. V360 Horizon is Liberty Global’s TV platform, & as they now own VM they want to phase TiVO out. The other issue working against retaining TiVO is VM migrating to an IP based TV platform & away from the older broadcast technology that drives TiVO.