FTP/firmware download access

[command_prompt]

It appears that 

http://ftp.hp.com/pub/networking/software/pfirmware

Is no longer accessible. (ditto for http://ftp.ext.hp.com//pub/networking/software/pfirmware/) I have tried various OS (Windows and macOS) and clients/protocols configurations to access it, to no avail. Is this a permanent decision (to remove it), or have these files been copied/moved to another location (and if yes, where to)? I used to download firmware files, then import them to HP Web Jetadmin and distribute them that way. Access to the resource was always done with "guest" account. Any help would be appreciated. 

TIA,

C_P

[Valsimot]

The ftp is for HP's internal use for some time now.

[command_prompt]

Thanks for replying. That's unfortunate; I think I the last time I was able to ftp was last summer. What has prompted the decision? What are those using Jetadmin supposed to do now?

C_P

[Valsimot]

It's security related, it has been out of public access for 3-4 weeks.

[command_prompt]

Windows' installers are capable of discovering devices that reside only on the same subnet as the Windows computer (there is no way to manually enter an IP address for many M*** Laserjet models) and macOS installers are telling me that the file is damaged and should be moved to trash. (Yes, I have tried numerous macOS boxes, running Big Sur-Monterey).

This is... not very helpful.

Sigh.

[Gimbal]

The latest firmware for MFP M273fdw causes the printer to restart every 20 seconds (just see your own forum for proof of that) - I urgently need to downgrade to a previous firmware. Where do I download the previous firmware?

[Hermenegildah]

Did you mean M283fdw? 

[Gimbal]

yes M283fdw