HiyaCFW day one installer badges are back after the release of the Memory Pit exploit by shutterbug2000. They will only be open from the 28th May 2019 to the 4th June 2019 (a week) so they aren't lasting for long. This will add to the 614 verified users from the first two rounds. I highly doubt that HiyaCFW badges will be returning after this because there probably won't be a new exploit with as big a scale as Memory Pit, so if you have installed HiyaCFW onto your DSi whether before or after Memory Pit's release, you should get a badge now or miss the chance.