DON'T UPDATE Your PS Vita Firmware Version To 3.69! (CFW PS Vita Only) - YouTube
PS Vita Firmware 3.69 & 3.70 Exploit by TheFlow has been released! - Hackinformer
PS Vita Unexpectedly Gets Firmware Update 3.69
Team XYZ shows off FW 3.70 hack for the PSVita / PSTV and TheFlow teases 'modoru' which may be a hombrew utility letting you downgrade your PSVita's firmware! - Wololo.net