downgrade hp prime g2 firmware in 2023

[MarcoGM]

Hello, guys, I have a question, I want to go back to an old version of my HP prime G2, specifically between the version "2018/10/31: Updated to version 2.1.14181 (2018-10-16)" or the factory version I have been looking for a way but generally the G2 firmwares are very difficult to find.
Recently, I have seen that everyone is referring to this link "ftp://ftp.hp.com/pub/calculators/Prime/Archive/" and I have tried to open it in Filezilla. I have followed the steps mentioned in other Posts, I don't know if anyone has access to that link and can guide me through the steps I have collected.
If someone could confirm to me if it is the only way to enter the URL or if there is another way to get the Firmwares.
I would like you help me, thank you.
postscript: I'm currently on version 2023