# ePMP Software Release 5.12.1 is now available
**URL:** https://community.cambiumnetworks.com/t/epmp-software-release-5-12-1-is-now-available/108864
**Category:** ePMP
**Tags:** release-notes
**Created:** [September 18, 2026, 2:14pm UTC](https://community.cambiumnetworks.com/t/epmp-software-release-5-12-1-is-now-available/108864 "2026-09-18T14:14:14Z")
**Posts on this page:** 13
**Page:** 1
### Author:  [@aka](https://community.cambiumnetworks.com/u/aka)
#### Post date: [September 18, 2026, 2:14pm UTC](https://community.cambiumnetworks.com/t/epmp-software-release-5-12-1-is-now-available/108864/1 "2026-09-18T14:14:14Z")
## Supported Platforms
- ePMP AX Platforms
- ePMP AC Platforms
- ePMP N Platforms
## Download the firmware and documentation from:
- [Force300-13L, Force300-25L](https://support.cambiumnetworks.com/files/epmp_f300_13l/beta)
- [Force300](https://support.cambiumnetworks.com/files/force300_sm/beta)
- [ePMP 3000, ePMP 3000L](https://support.cambiumnetworks.com/files/epmp3000/beta)
- [ePMP 4xxx, Force4xxx](https://support.cambiumnetworks.com/files/epmp_400_425/beta)
- [ePMP 1000/2000](https://support.cambiumnetworks.com/files/epmp1000_2000_ap/beta)
- [ePMP 1000 Force 100/110/180/190/200 SM](https://support.cambiumnetworks.com/files/epmp1000sm/beta)
- [ePMP Elevate](https://support.cambiumnetworks.com/files/epmp-elevate/beta)
- [Force 130](https://support.cambiumnetworks.com/files/force130_sm/beta)
- [ePMP WOM](https://support.cambiumnetworks.com/files/epmp_wom/beta)
## **Features description**
> [@\[New Feature - 5.12.1\] LACP (802.3ad) Pass-Through Over ePMP Wireless Bridges](https://community.cambiumnetworks.com/t/new-feature-5-12-1-lacp-802-3ad-pass-through-over-epmp-wireless-bridges/108807/):
>
> Applicable Versions: 5.12.1 Applicable Platforms: AX platform Link Aggregation (IEEE 802.1AX, formerly 802.3ad — commonly called LACP, LAG, “bonding,” or “port-channel”) lets two network devices combine several physical links into one logical one for extra throughput and automatic failover. ePMP AX now supports carrying LACP traffic transparently across a wireless hop, so a wireless link can serve as one member of a LAG between two third-party devices. No configuration needed on the radios. T…
## **Problems corrected**
| Tracking ID | Products | Description |
| --- | --- | --- |
| ACG-16899 | All | The issue where the Frequency Reuse switch disappeared on AC platforms. |
| AXG-11585 | All | The issue where the Separate Wireless Management Interface did not obtain IPv6 via SLAAC. |
| AXG-13294 | All | The issue where setting the MIR limit to less than 5 Mbps caused disconnects. |
| AXG-15323 | All | The issue where Spectrum Analyzer disappeared from the Configuration \> Radio page in the UI. |
| AXG-14485 | ePMP4500 | Multiple stability issues for ePMP4500. |
| AXG-14930 | All | Multiple issues related to CCA functionality. |
| AXG-14994 | All | The issue where F130/180/190/200 could not connect to F4518/F4525 APs. |
| AXG-15017 | ePMP4600, F4625, F4616 | Multiple stability issues for ePMP4600/F4625/F4616. |
| AXG-15237 | All | The issue where the AP configuration could show 80 MHz uplink bandwidth while SMs were actually using 160 MHz uplink bandwidth. |
| AXG-15255 | ePMP4500 | The issue where seamless channel switching did not work on ePMP4500. |
| CAMBIUM-20178 | All | The issue where the DHCPv4 server on .11n generation SMs did not assign leases in NAT mode. |
## **Known issues or limitations**
A problem has been observed on some ePMP 4500 AP units where all connected SMs briefly disconnect from the sector. In a small number of cases, SMs did not automatically reconnect on their own until the AP was rebooted (a wireless driver reload after the settings change has also been reported to restore connectivity). This is under investigation.
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### Author:  [@Mathew\_Howard](https://community.cambiumnetworks.com/u/Mathew_Howard)
#### Post date: [September 18, 2026, 3:00pm UTC](https://community.cambiumnetworks.com/t/epmp-software-release-5-12-1-is-now-available/108864/2 "2026-09-18T15:00:04Z")
Are there any changes from RC9?
Either way, thanks for getting this out - I would have hated being stuck on an RC forever if the worst case happens.
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### Author:  [@DigitalMan2020](https://community.cambiumnetworks.com/u/DigitalMan2020)
#### Post date: [September 18, 2026, 3:12pm UTC](https://community.cambiumnetworks.com/t/epmp-software-release-5-12-1-is-now-available/108864/3 "2026-09-18T15:12:42Z")
Thank you @aka , will this be on maestro before oct 1?
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### Author:  [@ninedd](https://community.cambiumnetworks.com/u/ninedd)
#### Post date: [September 18, 2026, 10:46pm UTC](https://community.cambiumnetworks.com/t/epmp-software-release-5-12-1-is-now-available/108864/4 "2026-09-18T22:46:58Z")
Thanks! We appreciate this, even if this is the same build as RC9 at least it’s something to have a full version number and not be staring at that -RC9 forever. I appreciate it very much, I’m sure others do as well. 🫶
Do you know if the cosmetic display issue with ( ) being in a device name and the AP wireless display unable to parse that was able to be fixed. It’s minor, changing the SM name in the SM fixes it… Just wondering if that was fixed. 👌
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### Author:  [@Silvio\_jofre](https://community.cambiumnetworks.com/u/Silvio_jofre)
#### Post date: [September 26, 2026, 1:30pm UTC](https://community.cambiumnetworks.com/t/epmp-software-release-5-12-1-is-now-available/108864/5 "2026-09-26T13:30:39Z")
Buenos días
Cuando estará la versión 5.12.1 wn Cn Maestro?
Muchas gracias
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### Author:  [@DigitalMan2020](https://community.cambiumnetworks.com/u/DigitalMan2020)
#### Post date: [September 28, 2026, 4:43pm UTC](https://community.cambiumnetworks.com/t/epmp-software-release-5-12-1-is-now-available/108864/6 "2026-09-28T16:43:11Z")
Hi @aka, just had this happen a few hours ago on a 4500 AP running 5.12.1RC9, havent implemented 5.12.1 final yet…
Anyone else experience this?
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### Author:  [@aka](https://community.cambiumnetworks.com/u/aka)
#### Post date: [September 28, 2026, 6:06pm UTC](https://community.cambiumnetworks.com/t/epmp-software-release-5-12-1-is-now-available/108864/7 "2026-09-28T18:06:04Z")
5.12.1-RC9 and 5.12.1 are identical.
Could you drop me the techsupport file. I will check what exactly has happened.
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### Author:  [@DigitalMan2020](https://community.cambiumnetworks.com/u/DigitalMan2020)
#### Post date: [September 28, 2026, 6:22pm UTC](https://community.cambiumnetworks.com/t/epmp-software-release-5-12-1-is-now-available/108864/8 "2026-09-28T18:22:06Z")
File was sent via PM, thank you!
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### Author:  [@dimas\_j\_perez](https://community.cambiumnetworks.com/u/dimas_j_perez)
#### Post date: [September 29, 2026, 10:11pm UTC](https://community.cambiumnetworks.com/t/epmp-software-release-5-12-1-is-now-available/108864/9 "2026-09-29T22:11:45Z")
Hi Andrii, will it be on CNMaestro ?
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### Author:  [@aka](https://community.cambiumnetworks.com/u/aka)
#### Post date: [September 30, 2026, 11:32am UTC](https://community.cambiumnetworks.com/t/epmp-software-release-5-12-1-is-now-available/108864/10 "2026-09-30T11:32:24Z")
Barely possible at this moment.
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### Author:  [@JORGE\_CERON](https://community.cambiumnetworks.com/u/JORGE_CERON)
#### Post date: [October 5, 2026, 9:30pm UTC](https://community.cambiumnetworks.com/t/epmp-software-release-5-12-1-is-now-available/108864/11 "2026-10-05T21:30:03Z")
I’m running a Point-to-Point (PTP) link with **Force 400C** radios, and I’ve noticed that firmware version **5.3.0** performs significantly better than the latest **5.12.1** release. I am attaching the speed test screenshots to show the difference.
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### Author:  [@aka](https://community.cambiumnetworks.com/u/aka)
#### Post date: [October 6, 2026, 8:55am UTC](https://community.cambiumnetworks.com/t/epmp-software-release-5-12-1-is-now-available/108864/12 "2026-10-06T08:55:39Z")
Hello @JORGE_CERON !
The difference is dramatic!
Have you chance to try with some natural traffic? I mean to isolate weather it is a performance issue or the wireless link test itself?
Could you PM me your techsupport files on 5.12.1? Or at lease one set on any FW.
Thank you!
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### Author:  [@JORGE\_CERON](https://community.cambiumnetworks.com/u/JORGE_CERON)
#### Post date: [October 7, 2026, 10:47pm UTC](https://community.cambiumnetworks.com/t/epmp-software-release-5-12-1-is-now-available/108864/13 "2026-10-07T22:47:58Z")
Hi Andrii,
Thank you for your reply. I will generate and send you the **tech support files for both versions (before and after)** via PM.
Regarding your question: I haven’t tested it with **real traffic** yet. These radios are currently deployed in a remote location, and any unexpected disconnection would result in high **operational and logistical costs** for us.
However, to isolate the issue safely, I am going to set up a separate **Force 400C link in a controlled lab environment** to test it with natural traffic and see if the performance drop persists.
I will keep you updated. Thanks again!