Upgrading Netvanta 1550-24P from 97101524-2RBVS10.biz to next firmware?

[aam-20]

Hello All,

I am knew to Adtran or AOS. I have a client that is having multiple noisy  Netvanta 1550-24P switches in different locations. I found from one of this community topics by upgrading the firmware fixed in the past. My current firmware is 97101524-2RBVS10.biz and when I check the image files from Adtran Support portal I see firm-wares starting with R13.x.x. 

When I issue "sh ver" I don't see the current device with anything that says Rxx.x.x. Here is my devices output.

Please help 

Sanitized output..

ADTRAN, Inc. OS version BVS1.0
Mainline Version: ENM.14.162
Built on: Mon Jun 1 13:44:50 CDT 2015
Hardware version R01-R01-R01
Boot ROM version BVS1.0
Built on: Mon Jun 1 13:37:14 CDT 2015
Compatibility Version: 0
Copyright (c) 1999-2015, ADTRAN, Inc.
Platform: NetVanta 1550-24P, part number xxxxxxx
Flash: 88666112 bytes DRAM: 259891200 bytes

System returned to ROM by Hard Reset (Kernel)
Current system image file is "97101524-2RBVS10.biz"
Primary boot system image file is "97101524-2RBVS10.biz"
Backup boot system image file is "97101524-2RBVS10.biz"
Primary system configuration file is "startup-config"

[Anonymous · Accepted solution]

This is your current version:  ADTRAN, Inc. OS version BVS1.0

I would upgrade to the latest sustained release code. 

Also is if remember correctly I think you need to power cycle after the upgrade to address the racing fan issue.

[aam-20]

Thanks. Finally I opened a case with the Support and they advised similar to your solution.