NÅNO Flow Computer Firmware5vX CPU Firmware For Legacy 4vX CPU Firmware, see bottom of pageCPU Firmware Release 5v2r10253CPU Firmware Release Notes - 5v2r10253 Issued 21-Apr-2026I/O Firmware From 3vXX I/O Firmware Release 3v05/2v12I/O Firmware Release Notes - 3v05/2v12 Issued 25-Feb-2025From 2vXX I/O Firmware Release 2v05/2v102vXX Release Notes - 2v05/2v10 Issued 19-Jan-2024System OS System OS Release 5.7.7Failsafe SD Card Generation Failsafe SD Card zipped Release 5.7.7 / 4v7r9455Preparing a bootable SD cardCPU Firmware 4vX - Legacy CPU Firmware Release 4v7r10122CPU Firmware Release Notes - 4v7r10122 Issued 09-Dec-2025