Who works mib on polycom rss400?

Question

Telephony

I can not remove snmp normally from iron polycom rss4000
returns only a few values.

snmpwalk -c RSS_READ -v 2c 172.30.3.101 .1.3.6.1.4.1.13885
iso.3.6.1.4.1.13885.101.1.1.0 = STRING: "1970-1-1,0:0:0.0,+0:0"
iso.3.6.1.4.1.13885.101.1.2.0 = STRING: "mib_v1"
iso.3.6.1.4.1.13885.101.1.3.0 = INTEGER: 30000
iso.3.6.1.4.1.13885.101.1.4.1.0 = STRING: "RSS4000"
iso.3.6.1.4.1.13885.101.1.4.4.1.2.1 = ""
iso.3.6.1.4.1.13885.101.1.4.4.1.3.1 = ""
iso.3.6.1.4.1.13885.101.1.4.4.1.4.1 = INTEGER: 0
iso.3.6.1.4.1.13885.101.1.4.5.1.2.1 = STRING: "CPU"
iso.3.6.1.4.1.13885.101.1.4.5.1.3.1 = STRING: "Intel"
iso.3.6.1.4.1.13885.101.1.4.5.1.4.1 = STRING: "Intel(R) Xeon(R) CPU L5410  @ 2.33GHz"
iso.3.6.1.4.1.13885.101.1.4.5.1.5.1 = ""
iso.3.6.1.4.1.13885.101.1.4.6.1.0 = STRING: ""
iso.3.6.1.4.1.13885.101.1.4.6.10.0 = STRING: "Russia"
iso.3.6.1.4.1.13885.101.1.5.1.2.1 = INTEGER: 14
iso.3.6.1.4.1.13885.101.1.6.1.3.16.1 = INTEGER: 1
iso.3.6.1.4.1.13885.101.1.6.1.3.16.2 = INTEGER: 6

in the webmord you can download MIB files, I download them, I query the MIBs through the browser and in response

Name/OID: rssActiveAlarmLevel.0; Value (NoSuchObject): (Snmp No Such Object)

and so for all downloaded MIBs, except for the first ones that were thrown off above

, now there is a firmware
Hardware Version 6.0
Software Version 8.5.3.0. rev 37508 Build 01/26/16

I tried to find the latest firmware on the polycom website, but there is this:

Recording, Streaming & Video Content Management Solutions

Effective January 2018, support and development of Polycom’s Video Content Management (VCM) portfolio has transitioned to HARMAN Connected Services.

For the latest software releases and documentation of the following products, please visit HARMAN’s website.
https://services.harman.com/microsites/harman-media-suite

    RealPresence Capture Server, Virtual Edition
    RSS 2000
    RSS 4000

on the HARMAN website there is nothing at all about polycom

, can anyone have the firmware?