Firmware What is happening with Hikvision firmware updates and versions?

[Armano38]

What is happening with Hikvision? I updated my camera, model DS-2CD2047G2-L. I had firmware V5.7.17_240606, and now I have V5.7.17 build 240731. When I did the update from the website, the firmware version didn't have any PDF to see what this firmware brings new. Today, when I checked the website to see if they had added the PDF, I noticed that firmware V5.7.17 build 240731 has disappeared from the site. It’s no longer there, and only V5.7.17_240606 remains. I don't understand why they withdrew the firmware version V5.7.17 build

240731. DS-2CD2047G2-L(U)