# ePMP Software Release 5.9.0 is now available
**URL:** https://community.cambiumnetworks.com/t/epmp-software-release-5-9-0-is-now-available/102098
**Category:** ePMP
**Tags:** release-notes
**Created:** [October 24, 2024, 9:05pm UTC](https://community.cambiumnetworks.com/t/epmp-software-release-5-9-0-is-now-available/102098 "2024-10-24T21:05:55Z")
**Posts on this page:** 15
**Page:** 1
### Author:  [@Fedor](https://community.cambiumnetworks.com/u/Fedor)
#### Post date: [October 24, 2024, 9:05pm UTC](https://community.cambiumnetworks.com/t/epmp-software-release-5-9-0-is-now-available/102098/1 "2024-10-24T21:05:56Z")
This document provides information about the new features, additional enhancements, problems corrected, and known issues in Release 5.9.0.
## 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)
- [Force300](https://support.cambiumnetworks.com/files/force300_sm)
- [ePMP 3000, ePMP 3000L](https://support.cambiumnetworks.com/files/epmp3000)
- [ePMP 4xxx, Force4xxx](https://support.cambiumnetworks.com/files/epmp_400_425)
- [ePMP 1000/2000](https://support.cambiumnetworks.com/files/epmp1000_2000_ap)
- [ePMP 1000 Force 100/110/180/190/200 SM](https://support.cambiumnetworks.com/files/epmp1000sm)
- [ePMP Elevate](https://support.cambiumnetworks.com/files/epmp-elevate)
- [Force 130](https://support.cambiumnetworks.com/files/force130_sm)
- [ePMP WOM](https://support.cambiumnetworks.com/files/epmp_wom)
## Features
- _**Scalability Enhancements (ePMP 4xxx Series)**_
Significant performance improvements have been implemented, increasing throughput for deployments with a large number of connected SMs on the ePMP 4600/4500 series.
- _**Split Sector 4x4 Mode (ePMP 4500C)**_
Split Sector 4x4 mode now supports two 4x4 antennas, with beamforming independently applied to each antenna and provides a +3 dB beamforming gain on the downlink.
For Split Sector mode, connect the antennas as follows:
First antenna: Chains 0/1/4/5
Second antenna: Chains 2/3/6/7
- _**MTU 9600 Support in TDD Mode (ePMP 45xx/46xx Series)**_
The latest firmware now supports an increased Ethernet MTU values of up to 9600 bytes in TDD mode.
- _**Automatic Channel Selection (ACS) (ePMP 45xx/46xx Series)**_
To access the ACS feature, navigate to Tools \> Automatic Channel Selection page. When enabled, ACS scans the entire frequency band based on the Country setting and automatically selects the channel with the lowest interference, optimizing performance in the current RF environment.
- _ **The ability to add a secondary Proxy Server for AFC has been implemented.** _
## Problems corrected
| Tracking ID | Products | Description |
| --- | --- | --- |
| AXG- 10391 | All | Resolved the issue where settings for AFC Proxy servers configured via the GUI were not applied until a reboot. |
| AXG- 10218 | All | Improved TCP performance for deployments with multiple Subscriber Modules (SMs). |
| AXG- 10189 | All | Fixed the issue preventing SMs from reconnecting to an AP after disconnection due to AP KEEP ALIVE RX STUCK. |
| AXG- 10178 | All | Addressed stability issues causing occasional reboots in ePMP 45xx/46xx APs. |
| AXG-9980 | All | Fixed the issue where Total Frame Time Used consistently displayed 0% in TDD mode. |
| AXG-9977 | All | Fixed the issue preventing AFC SMs from selecting the optimal mode between Standard and Fixed Client modes. |
| AXG-9918 | All | Fixed the issue where SMs displayed incorrect AFC system status for non-AFC frequencies. |
| AXG-9890 | All | Fixed the issue causing SMs to disconnect with Reason: 41 (STA DISASSOC REASON PPPOE LCP LOST). |
| AXG-9877 | All | Resolved the problem that prevented setting a device name with up to 64 characters. |
| AXG-9821 | All | Fixed the issue displaying incorrect Tx Power for 6GHz AFC devices in cnMaestro. |
| AXG-9630 | All | Fixed the issue where an invalid error message appeared for AFC connection status on SMs in NAT mode after reconfiguration. |
| AXG-9510 | All | Resolved the issue of AP KEEP ALIVE RX STUCK occurring in ePTP mode with MTU 9600 configured. |
| AXG-8849 | All | Fixed the issue of lower-than-expected DL RSSI observed on ePMP 4600 and ePMP 4500 APs. |
| AXG-5932 | All | Fixed the problem preventing SMs from authenticating on a Radius Server when Auth- Type was set to Accept. |
| AXG-5658 | All | Resolved the issue where ePMP radios connected through the SFP port were unreachable in NAT/Router mode. |
| AXG- 10186 | All | Addressed the issue where an AP in WLR mode dropped all SMs, preventing them from reconnecting. |
| AXG-10568 | All | Fixed an issue where ePMP AX SMs in NAT mode failed to reconnect to the AP after changes were applied on the AP. |
Please note that MTU settings configured to non-default values in ePTP and WLR modes on 5.7.0/5.7.1/5.7.2/5.8 firmware will reset to the default value after upgrading to firmware 5.9.0, necessitating reconfiguration.
---
### Author:  [@JLLC](https://community.cambiumnetworks.com/u/JLLC)
#### Post date: [October 25, 2024, 8:21pm UTC](https://community.cambiumnetworks.com/t/epmp-software-release-5-9-0-is-now-available/102098/2 "2024-10-25T20:21:31Z")
I don’t see any issues or improvements listed for 11n or 11ac devices (except those connecting to an 11ax device). Any reason to update older builds?
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### Author:  [@Vyacheslav\_Om](https://community.cambiumnetworks.com/u/Vyacheslav_Om)
#### Post date: [October 26, 2024, 9:31pm UTC](https://community.cambiumnetworks.com/t/epmp-software-release-5-9-0-is-now-available/102098/3 "2024-10-26T21:31:47Z")
Оновив 2 лінка (один на 17 км, другий, майже 26 км), обладнання еРТР Force 400C + Rocketdish 5g-34, і відразу почалися проблеми з модуляцією, то максимальна DS11, то падає до SS5-6, потім знову піднімається до максимуму і знову падіння. Довелося відкотитися знову на прошивку 5.4.2 (найвдаліша прошивка для даного обладнання) і одразу модуляції стабілізувалися на першому лінку DS11 (швидкість 900+ на 80) на іншому DS9 (швидкість 600+ на 80 ширині каналу). В кого ще проблеми з Force 400C на цій прошивці?
* * *
Google Translate:
> Updated 2 links (one for 17 km, the second for almost 26 km), eRTP equipment Force 400C + Rocketdish 5g-34, and immediately problems with modulation began, then the maximum DS11, then drops to SS5-6, then rises to the maximum again and fall again I had to roll back to firmware 5.4.2 (the most successful firmware for this equipment) and immediately the modulations stabilized on the first link DS11 (speed 900+ on 80) on the other DS9 (speed 600+ on 80 channel width). Anyone else having problems with the Force 400C on this firmware?
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### Author:  [@Jacob\_Turner](https://community.cambiumnetworks.com/u/Jacob_Turner)
#### Post date: [October 26, 2024, 10:43pm UTC](https://community.cambiumnetworks.com/t/epmp-software-release-5-9-0-is-now-available/102098/4 "2024-10-26T22:43:30Z")
The 5.X branch is targeted at AX gear and AC SMs connecting to AX APs. If you have a mixed AC/N install base there is no benefit moving past 4.8.x at this point.
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### Author:  [@DigitalMan2020](https://community.cambiumnetworks.com/u/DigitalMan2020)
#### Post date: [October 31, 2024, 5:07am UTC](https://community.cambiumnetworks.com/t/epmp-software-release-5-9-0-is-now-available/102098/5 "2024-10-31T05:07:39Z")
yes have had significant throughput loss on 5.8 and some prior. Need to roll back 5.4.2 as well
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### Author:  [@DigitalMan2020](https://community.cambiumnetworks.com/u/DigitalMan2020)
#### Post date: [November 1, 2024, 2:53pm UTC](https://community.cambiumnetworks.com/t/epmp-software-release-5-9-0-is-now-available/102098/6 "2024-11-01T14:53:00Z")
Is anyone having modulations go out of whack when upgraded to 5.9? I tried 2 links but had to roll them back and once rolled back stayed stable at DS11
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### Author:  [@Jacob\_Turner](https://community.cambiumnetworks.com/u/Jacob_Turner)
#### Post date: [November 1, 2024, 3:02pm UTC](https://community.cambiumnetworks.com/t/epmp-software-release-5-9-0-is-now-available/102098/7 "2024-11-01T15:02:45Z")
I have seen lower modulation rates on average on two upgraded ptp links but 5.9 fixed at least part of a management vlan access problem, so maybe it’s worth the trade off.
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### Author:  [@Vyacheslav\_Om](https://community.cambiumnetworks.com/u/Vyacheslav_Om)
#### Post date: [November 1, 2024, 7:43pm UTC](https://community.cambiumnetworks.com/t/epmp-software-release-5-9-0-is-now-available/102098/8 "2024-11-01T19:43:59Z")
I have already submitted a support request, it is fixed in beta 5.9.1
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### Author:  [@Mathew\_Howard](https://community.cambiumnetworks.com/u/Mathew_Howard)
#### Post date: [November 9, 2024, 12:55am UTC](https://community.cambiumnetworks.com/t/epmp-software-release-5-9-0-is-now-available/102098/9 "2024-11-09T00:55:31Z")
I’m still seeing the “AP KEEP ALIVE RX STUCK” issue occasionally. It’s happening a lot less than it was on 5.7/5.8, but doesn’t appear to be completely fixed.
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### Author:  [@Nex-Tech\_Network\_Ope](https://community.cambiumnetworks.com/u/Nex-Tech_Network_Ope)
#### Post date: [December 9, 2024, 9:12pm UTC](https://community.cambiumnetworks.com/t/epmp-software-release-5-9-0-is-now-available/102098/10 "2024-12-09T21:12:12Z")
We are also still seeing Reason: 53 (AP KEEP ALIVE RX STUCK) when running the 5.9 firmware.
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### Author:  [@Eric\_Ozrelic](https://community.cambiumnetworks.com/u/Eric_Ozrelic)
#### Post date: [December 9, 2024, 9:28pm UTC](https://community.cambiumnetworks.com/t/epmp-software-release-5-9-0-is-now-available/102098/11 "2024-12-09T21:28:36Z")
Try updating to 5.9.1. It was just released.
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### Author:  [@Paul\_Van\_Der\_Merw](https://community.cambiumnetworks.com/u/Paul_Van_Der_Merw)
#### Post date: [December 12, 2024, 2:21pm UTC](https://community.cambiumnetworks.com/t/epmp-software-release-5-9-0-is-now-available/102098/12 "2024-12-12T14:21:34Z")
if my sub is still on V4.6 will it connect with the new V5.0?
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### Author:  [@Paul\_Van\_Der\_Merw](https://community.cambiumnetworks.com/u/Paul_Van_Der_Merw)
#### Post date: [December 12, 2024, 2:29pm UTC](https://community.cambiumnetworks.com/t/epmp-software-release-5-9-0-is-now-available/102098/13 "2024-12-12T14:29:12Z")
Sorry V5.9
Not V5.0
Does anyone knows?
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### Author:  [@Fedor](https://community.cambiumnetworks.com/u/Fedor)
#### Post date: [December 12, 2024, 4:45pm UTC](https://community.cambiumnetworks.com/t/epmp-software-release-5-9-0-is-now-available/102098/14 "2024-12-12T16:45:54Z")
If both are N or AC legacy platforms, then the answer is yes.
Thanks.
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### Author:  [@system](https://community.cambiumnetworks.com/u/system)
#### Post date: [December 12, 2025, 4:46pm UTC](https://community.cambiumnetworks.com/t/epmp-software-release-5-9-0-is-now-available/102098/15 "2025-12-12T16:46:23Z")
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