For 2.53.5+ it should work without having to make any changes.
For versions prior to the 2.53.5 release, including 2.53.5b1, a user.js file needs to be created in the profile directory / folder. Help > Troubleshooting Information will give the correct location and use the Open Directory / Folder button to go there. The user.js file needs to include:
Code: Select all
pref("app.update.url", "https://updates.seamonkey-project.org/update/3/%PRODUCT%/%VERSION%/%BUILD_ID%/%BUILD_TARGET%/%LOCALE%/%CHANNEL%/%OS_VERSION%/%DISTRIBUTION%/%DISTRIBUTION_VERSION%/update.xml");
pref("app.update.certs.1.commonName", "updates.seamonkey-project.org");
pref("app.update.certs.1.issuerName", "CN=Let's Encrypt Authority X3,O=Let's Encrypt,C=US");
pref("app.update.certs.2.commonName", "updates.seamonkey-project.org");
pref("app.update.certs.2.issuerName", "CN=Let's Encrypt Authority X3,O=Let's Encrypt,C=US");