I'm running Ignition 8.1.25 and would like to upgrade the Web Browser module to the latest 5.1.33 to see if this fixes some issues. Is this possible?
No, you can't update to the .33 version because it requires a base platform version of 8.1.33, because we updated the Java version Ignition is compiled with, so your older gateway would be fundamentally unable to run the newer module. You could try the 8.1.32 version, but it's unlikely to make any difference; we bumped the browser library version in 8.1.34, so in any event you'd have to upgrade the whole platform to take advantage.
OK. Suspected that would be the case.