Unable to update - key expired

I have the 16.04 OSMC repositories registered as detailed for ubuntu here (OSMC official).

I am currently unable to update as it seems the key has expired:

Err:11 http://download.opensuse.org/repositories/home:/osmc/xUbuntu_16.04  Release.gpg                
The following signatures were invalid: EXPKEYSIG 8873E7BF70F1BBEA home:osmc OBS Project <home:osmc@build.opensuse.org>

W: An error occurred during the signature verification. The repository is not updated and the previous index files will be used. GPG error: http://download.opensuse.org/repositories/home:/osmc/xUbuntu_16.04  Release: The following signatures were invalid: EXPKEYSIG 8873E7BF70F1BBEA home:osmc OBS Project <home:osmc@build.opensuse.org>
W: Failed to fetch http://download.opensuse.org/repositories/home:/osmc/xUbuntu_16.04/Release.gpg  The following signatures were invalid: EXPKEYSIG 8873E7BF70F1BBEA home:osmc OBS Project <home:osmc@build.opensuse.org>

I’ve seen this problem reported a few time and I have tried updating the key but to no avail. Does anyone know how to fix this?

I’m about to deprecate the Linux installer.

Just take the image and dd it from the download page.

Sam

Ahhhh…well that would explain that then!