Mod requests (orders).

Please advise, I can't open the DDS textures of the black dragon and portraits, neither with Photoshop and a plugin, nor with Paint.NET. I read that it might be DDS2, but I installed a plugin for Paint.NET and still couldn't open them. Could someone resave them in a regular DDS format? Also, the dragon textures are corrupting the texture of the poisonous viper (its wings are being used). As a result, the viper has no texture at all. I couldn't find where this dependency is specified in the files. I renamed the paths in the XDB files and the files themselves, but it didn't help. Could someone redo them or suggest how to make the viper's textures display correctly?
The mod itself

These are regular *.dds files; it's a game from 2006, so where would new technologies come from?
Also, does your Photoshop startup window look like this when you open *.dds files?

The round areas indicate the bit depth in which you are opening the texture; the picture shows the default setting, and you don't need to know the other areas; this is enough to open textures from Heroes 5.
Regarding the issue where a certain texture is not displayed in the game. If you saved the *.dds file in the DXT_3 compression format, but the *.xdb file specifies 8888, then the texture will either be displayed incorrectly or not displayed at all.

In general, I still don't fully understand what dependency you are talking about and where you specified it.