Contact the reseller and ask them if they will provide a copy of the Channel editor software. If not, find a copy of "DB tool" channel editing software and see if it works with a saved database saved to a USB drive from the receiver. If it works, this will be much easier than editing with the remote!
Who is the reseller? That is a total BS reply! The way I see it (especially with niche electronics) if you sell it, you support it... One of my biggest peeves is a seller who has no knowledge of a product they sell or unable/unwilling to provide customer support. Those resellers give customers a bad experience and are a black eye to the satellite equipment distributors!
Yep, I feel strongly about that...