What you want to ask is what should I do if the diy firmware set-top box signature is unsuccessful? The steps are as follows:

1. First, make sure that the network connection is normal and the set-top box cannot be turned off.

2. Secondly, wait for the system to automatically download the upgrade package, restart it automatically after the download is completed, and install a new upgrade package.

Finally, when you see the home page again, you have signed the contract successfully.