AP7921B Firmware upgrade failed --- The Application Was Not Able to Load --- Stat : P+ N+ A-

[Alfred_E_Neumann]

I tried to update the firmware to the latest version

Network Management Card v7.1.3 RPDU 2G Firmware Executable form January 09 2024

and it failed. I ended in this state.

Every help is welcome.

User Name : apc
Password : ***

Schneider Electric Network Management Card AOS v7.1.2
(c) Copyright 2023 All Rights Reserved
-------------------------------------------------------------------------------
Name : Power2 Date : 01/30/2024
Contact : admin Time : 05:23:17
Location : basement User : Super User
Up Time : 0 Days 16 Hours 56 Minutes Stat : P+ N+ A-
-------------------------------------------------------------------------------
IPv4 : Enabled IPv6 : Disabled
Ping Response : Enabled
-------------------------------------------------------------------------------
HTTP : Enabled HTTPS : Enabled
FTP : Enabled Telnet : Enabled
SSH/SCP : Enabled SNMPv1 : Disabled
SNMPv3 : Enabled
-------------------------------------------------------------------------------
Super User : Enabled RADIUS : Disabled
Administrator : Disabled Device User : Disabled
Read-Only User : Disabled Network-Only User : Disabled

Type ? for command listing
Use tcpip command for IP address(-i), subnet(-s), and gateway(-g)

[Teken]

I’m not sure why your screen capture shows 7.1.2 vs 7.1.3 firmware? Regardless, I would connect directly to the PDU with the serial cable.

Log in over the CLI and select the option to default the unit to a factory state. If that works you win - and you can reconfigure the PDU and move on. 👍

If that doesn’t work you can try to reflash the firmware. It’s normally best practice to update the firmware in a staged manner. The oldest firmware is 7.0.8 on the APC website so would have upgraded to this before going to 7.1.3.

Normally staged upgrades only need to be done when there’s a large branch change say 5.XX -> 6.XX -> 7.XX firmware. Maybe one day APC will incorporate a roll back feature along with firmware validation BEFORE the system begins the upgrade process like thousands of other vendors! 🤦‍♂️☝️

[drhex]

Same issue here trying to go from 7.0.8 to 7.1.4:

Schneider Electric Network Management Card AOS v7.0.8
(c) Copyright 2022 All Rights Reserved
-------------------------------------------------------------------------------
Name : rs.main.ground.itc.apc2 Date : 10.01.2025
Contact : Unknown Time : 11:01:58
Location : Riverside main building User : Administrator
Up Time : 0 Days 0 Hours 34 Minutes Stat : P+ N4+ N6+ A-
-------------------------------------------------------------------------------
IPv4 : Enabled IPv6 : Enabled
Ping Response : Enabled
-------------------------------------------------------------------------------
HTTP : Enabled HTTPS : Enabled
FTP : Enabled Telnet : Disabled
SSH/SCP : Enabled SNMPv1 : Read/Write
SNMPv3 : Disabled
-------------------------------------------------------------------------------
Super User : Enabled RADIUS : Disabled
Administrator : 1 Enabled Device User : Disabled
Read-Only User : Disabled Network-Only User : Disabled

Type ? for command listing
Use tcpip command for IP address(-i), subnet(-s), and gateway(-g)

apc>?

System Commands:
---------------------------------------------------------------------------
For command help: command ?

? about alarmcount boot bye cd
cipher clrrst console date delete dir
dns eapol email eventlog exit firewall
format ftp help lang lastrst ledblink
logzip netstat ntp ping portspeed prompt
pwd quit radius reboot resetToDef session
smtp snmp snmptrap snmpv3 system tcpip
tcpip6 user userdflt web whoami xferINI
xferStatus

apc>system
E000: Success
Host Name Sync: Enabled
Name: rs.main.ground.itc.apc2
Contact: Unknown
Location: Riverside main building
Message:
DateTime: 10.01.2025:11:03:01
User: admin
Up Time: 0 Days 0 Hours 35 Minutes
Stat: P+ N4+ N6+ A-
Bootmon: Invalid Module Header!
AOS: Invalid Module Header!
App: Invalid Module Header!

apc>about
E000: Success
Hardware Factory
---------------
Model Number: AP7920B
Serial Number: 5A1940E04525
Hardware Revision: B2
Manufacture Date: 10/03/2019
MAC Address: 28 29 86 1E 4D B8
Management Uptime: 0 Days 0 Hours 54 Minutes

Network Management Card
---------------
Model Number: 0G-1238
Serial Number: 5A1940E04030
Hardware Revision: 05
Manufacture Date: 10/02/2019

Application Module
---------------
Invalid Module Header!

APC OS(AOS)
---------------
Name: aos
Version: v7.0.8
Date: May 27 2022
Time: 16:39:43

APC Boot Monitor
---------------
Name: bootmon
Version: v1.0.9
Date: Mar 27 2019
Time: 16:23:06

Did you manage to fix this? DImly remember that this was an issue with NMC1 vs NMC2 last time.

Florian

[drhex]

OK, manual upload via FTP worked on the affected unit. Rest just upgraded without a hitch.