The PS Vita has just seen it's latest firmware go live just about a day before its wide release in western territories bringing it to version 1.61. The actual user experience improvements seem to be minimal. No word yet from Wololo on whether this patches the upcoming Vita HBL exploit or not.
Users looking forward to Vita HBL (PSP mode) should hold off on updating and stay tuned to the source link below or this thread until it is determined if this update is homebrew-safe.
UPDATE: Teck4 reports that the HBL is still functional on 1.61: https://twitter.com/...802148277981184