The most recent beta firmware for the V2 is 19.3.20190809. This contains the most recent picon updates, including the SBS World Movies picon and the picon for openshop.
Switching your software feed to a live beta
The instructions for enabling the beta feed don't require your PVR to be networked. You can use the same USB thumb drive to hold the beta feed enabler script as you use for firmware updates. You can enable the beta feeds without having to remove the update files from the USB drive, and you can do firmware updates from the drive without having to remove the beta feed updater script from the drive.
If you're running the beta firmware on any model other than a V2, then you don't need to enable the beta feed for the current betas. Those models are already set up to fetch beta updates.
The update to 20190809 is quite large: 230+ packages. It will suggest that ou do the update from USB, but there is no USB update available for 20190809, so if you want 20190809, you need to proceed with the online update.
There is a USB update to 20190802, which also includes the latest picon changes. But updating from that to 20190809 is still 230+ packages.