AV3555DN-x | Firmware 65269 will not apply

Environment:

• AV3555DN-S
• AV3555DN-S-NL
• AV3555DN-S-APZ
• hwfwupdate_lx45_ddr2_parallel_microdome_65269.0_20210324_3640.av (posted on web site)

Symptoms: 

The update will go thru its update process and it will show completed but the camera will not take the update. The previous firmware will still be displayed.

Solution:

Download and apply the firmware fwupdate_65269_3555_AV3555DN-S.mb listed below: