Dahua Firmware version explanation and clarification

[Corellon]

I've recently been looking through the Dahau firmware and was wondering if someone could point out a resource for further information or answer a few questions?

Right now firmware appears to be in two different streams 2.622 and 2.800 what is the difference between the streams?
Most Firmware has a PN and NP version, difference between the two? - Answered, Legacy naming from Pal/NTSC both are identical?
What would HDMI in the firmware title indicate?
What is the difference between the _Market firmware and the ones without the _market.

When you look into the files, there are about 8 that are compatible with the camera model so I'm trying to distinguish the difference,

Thanks

 

[Arjun]

As far as I know, there are generally two firmware files for the same firmware version - one being with the Dahua logo and the other without Dahua logo. At least this is what I notice here on the forum.

I've recently been looking through the Dahau firmware and was wondering if someone could point out a resource for further information or answer a few questions?

Right now firmware appears to be in two different streams 2.622 and 2.800 what is the difference between the streams?
Most Firmware has a PN and NP version, difference between the two? - Answered, Legacy naming from Pal/NTSC both are identical?
What would HDMI in the firmware title indicate?
What is the difference between the _Market firmware and the ones without the _market.

When you look into the files, there are about 8 that are compatible with the camera model so I'm trying to distinguish the difference,

Thanks

 

[Corellon]

What I've narrowed it down to is between these versions:
DH_IPC-HX5X3X-HDMI-Rhea_EngSpnFrn_N_Stream3_Market_V2.622.0000000.31.R.180813
DH_IPC-HX5X3X-Rhea_MultiLang_NP_Stream3_Market_V2.800.0000014.0.R.191203
DH_IPC-HX5X3X-Multi-Rhea_Eng_P_Market_V2.622.0000000.32.R.190827

In regards to the _market new firmwares have it while older ones such as: DH_IPC-HX5X3X-Rhea_MultiLang_NP_Stream3_V2.800.0000008.0.R.190619 lacked it.

mostly wondering what the difference between 2.622 and 2.800 is as they are actively maintaining both branches, if one was superseded I would not think you would see updates to it.