Help needed to update to Sonoma

So I am trying this for days now, I installed the Ventura a couple of months ago.

I have an upgrade available for Sonoma beta for a while, I tried several times and got below error everytime. I thought maybe, it is with the beta and waited for Stable to arrive.

Failed to download the update anytime, everytime!!

Also, I have a very good stable internet connection.

Now, today I switched from Beta to Stable and tried upgrading, it is the same.

Update available in the stable channel

I am connected to the internet with an ethernet cable directly coming from the router and is connected to the motherboard ethernet connector of my PC.

Below are the specs:

• AMD Ryzen 7 5700X
• Saphhire Pulse RX 580(identified as Ellesmere [Radeon RX 470/480/570/570X/580/580X/590])
• Corsair Vengeance @ 3000Mhz, 32GB - 16GB x 1, 8GB x 2
• Intel Corporation - I211 Gigabit Network Connection - connected at en0, recognised as built-in
• Samsung Evo 860 m.2 SATA SSD
• Opencore 0.9.3
• MacPro7,1
• macOS Ventura Version 13.5.1 (Build 22G90)
• Facetime, iMessages work fine. I do not need/have a wifi to test out other features.

Success !

Kexts added to the UEFI

Please Help !