Here are the latest new firmware for the new 4.0 models(some fixed lens only). Attention, please double check before you make the update and make sure you are use the right firmware for right models which i list below ONLY. Models for IPC-T5442TM-AS, IPC-T5442TM-AS-LED IPC-T5241TM-AS IPC-T5541TM-AS Feature Description 1 Multi-rule people counting solution. 2 Low bit rate solution. 3 4MP/5MP camera of Series 5 supports high frame rate (50/60 fps) lower than 1080p. 4 Add face detection function on customized fixed focal camera. 5 Add audio importing formats MP3 and AAC on siren and spotlight network camera. 6 Add 2560 × 1440 resolution. 7 Optimize password resetting solution. 8 Support license verification requirement for second period, and add algorithm version display. 9 Improve IVS detection performance. Pending issues FIXED Bug: NONE. Attention, this firmware not suit for IPC-HDW5231R-ZE or IPC-HDW2231R-ZS.