Flir N253EA8 flashing to Dahua

[zole]

Hi,

I have a Flir N253EA8 camera that is, according to dahuawiki a Dahua N84CG52. I would like to flash it to Dahua if it is possible, as the firmware is old and is plugin based (not working in modern browsers)
Info tab:

Device Type N253EA8
System Version 00002
Build Date 2018-01-17
WEB Version 3.2.1.515090
ONVIF Version 16.12(V2.4.1.510971)

I've tried directly from the web interface, but it just loads the file and then reboots like nothing happened. I've tried the DH_IPC-HX5X3X-Rhea_MultiLang_NP_Stream3_V2.800.0000018.0.R.210707.bin file.
Any good info where to start?

Thanks