1
List what you actually run
Model, hardware revision and running firmware version for every device. Your cnMaestro inventory export is the fastest start; check stragglers on the device itself. You only need firmware for models you own.
Cambium Network Rescue · Checklist
Cambium firmware, license keys and RMA records:
what to save before the portals change hands.
Updated 2026-10-11 · Facts below are dated and sourced.
Cambium’s download site, license-key records and warranty lookup still work today. Who runs them in November depends on the product line: Airspan bought some lines and says it will move to a new support system by the end of October, and the rest are still with the administrators. Your radios, access points and switches keep passing traffic either way. What you can lose is the paperwork: the firmware you would roll back to, the license keys tied to your serials, your LINKPlanner projects and your proof of warranty. This page is the list of what to pull from your own account, family by family, while it is easy.
Independent. Ambio Edge Networks is an independent network engineering firm. We are not affiliated with, authorized by, or a partner of Cambium Networks, Airspan Networks, Univastu or the administrators (RSM UK). Product names are trademarks of their owners, used only to identify the equipment we work on.
Status as of 2026-10-11
- The Cambium support site’s Software Downloads, License Keys and Warranty sections were reachable on 2026-10-11.
- Firmware downloads are rate-limited. A Cambium staff reply on 2026-09-30 put the limit at “10 files every 20 minutes” (Cambium Community thread 109026).
- Airspan says that by the end of October it will move the lines it bought (PMP 450, PTP 670/700, cnWave and others) to a new support system, and that for now nothing changes: “no new firmware requirements, license keys, etc.” (Airspan FAQ v6, 2026-10-05).
- Desktop LINKPlanner was scheduled for removal from downloads on 2026-10-09. The path-profile service may shut down as early as 2026-10-31; Airspan is investigating restoring the original 2026-11-27 date (Airspan FAQ v6).
- ePMP, enterprise Wi-Fi, cnMatrix and NSE were not bought by Airspan. Univastu has been in exclusivity with the administrators since 2026-09-30; that deal has not closed.
Where the files are
Where Cambium firmware downloads are today.
Firmware, release notes and tools are on the Cambium support site under Software Downloads: support.cambiumnetworks.com/files. License keys are under support.cambiumnetworks.com/licensekeys and the warranty lookup is under support.cambiumnetworks.com/warranty. Use those, signed in to your own account. That is the only source we point anyone to.
We do not host, mirror or send Cambium firmware. It is not ours to distribute, and a file from a stranger is a file you cannot trust on a tower or a ceiling. Forum users have asked Cambium to publish a community firmware archive; nothing official exists as of 2026-10-11. Pull your own copies now and keep them somewhere you control.
The checklist
Firmware archive checklist, by product family.
Do the same four things for every family you run, then work through the family notes.
2
Pull two versions per model
The version you run now, so you can reload a replacement unit to match, and the version below it, so you can roll back. Save the release notes with each file.
3
Pace it around the rate limit
At 10 files per 20 minutes, 30 files an hour is the ceiling. Make the full file list first, then pull it in batches. Scripts that hammer the site are the reason the limit exists.
4
Hash it and store it twice
Record a SHA-256 hash of each file as you save it, next to the file name, model and download date. Keep one copy on site and one off site. The hash lets you prove later that the file hasn’t changed since you saved it.
| Family | Who has it now | What to save |
|---|---|---|
| ePMP (including Force subscriber radios) | Not bought by Airspan; with the administrators | AP and subscriber-module firmware for each model and hardware revision, current and previous. Feature or country license keys for each serial. |
| PMP 450 family | Airspan | Current and previous firmware per model. Any license keys. Note your support-contract numbers for Airspan’s new support system. |
| PTP 670 / 700 / 450i | Airspan | Firmware for both ends of each link, plus any capacity or feature license keys tied to each serial. |
| PTP 820 / 850 licensed microwave | Not bought by Airspan; Airspan says it is “in discussions with the OEM supplier of the PTP 820/850” | Firmware, license keys and the configuration of each link end. Nobody has committed to support this line yet. |
| Enterprise Wi-Fi (cnPilot, XV, Xirrus) | Not bought by Airspan; with the administrators | AP firmware per model, current and previous. cnMaestro X subscription details. |
| cnMatrix switches | Not bought by Airspan; with the administrators | Switch firmware per model, current and previous. A copy of each switch’s running configuration. |
| NSE gateways | Not bought by Airspan; with the administrators | Firmware per model and a configuration export from each unit. |
Don’t upgrade blind
Archiving is not the same as upgrading. With support uncertain for half the portfolio, a bad upgrade is harder to undo. One example: an operator report in Cambium Community thread 108864 (2026-10-05) said ePMP 5.3.0 performed significantly better than 5.12.1 on Force 400C radios in point-to-point mode, and Cambium staff asked for support files to investigate. Treat that as one operator’s result, not a verdict. Test any new version on one link or one AP first, and keep the old file so you can go back.
Licenses
Back up your Cambium license keys.
License keys are tied to serial numbers, and the record of which key belongs to which serial lives in Cambium’s system. If that system changes hands or moves, you want your own copy. From your own account:
- Open the License Keys section and save every key with its serial number, product, feature and issue date. A screenshot is better than nothing; a spreadsheet is better than a screenshot.
- Include any feature, capacity or country license keys your radios use. On a replacement unit these are what you will need to reapply.
- Record your cnMaestro X subscription details: tier, device count, start and end dates, and the account it sits under.
- Save support-contract and Cambium Care contract numbers, end dates and the invoices that prove you paid for them.
- Keep the file with your firmware archive, not in someone’s inbox.
For Airspan-owned lines, Airspan says nothing needs to change at this time. For the lines Airspan did not buy, Airspan’s FAQ tells owners to contact Cambium Networks for options. If you prepaid for support or subscriptions and want to know where that stands, the administrators’ published contact is [email protected]. We can’t advise on creditor claims.
Planning files
Cambium LINKPlanner: export your projects now.
LINKPlanner went to Airspan in the 2026-09-22 sale. Desktop LINKPlanner was scheduled for removal from the support site downloads on 2026-10-09. The path-profile service may shut down as early as 2026-10-31; Airspan is investigating restoring the original 2026-11-27 date (Airspan FAQ v6, 2026-10-05). An earlier Cambium Community notice (thread 108977) said desktop LINKPlanner “will not be able to obtain path profiles from 30 October 2026”, so plan for the earlier date. Airspan says migration to the cloud version of LINKPlanner is on schedule. It also says it can only commit to LINKPlanner support for the products it bought; support for ePMP and other non-acquired lines is “being investigated”. Export ePMP projects first.
- If you still have the desktop installer, keep a copy with your archive.
- Open every project you care about and save a copy to storage you control, including any reports and bills of materials you generated from it.
- Request any new path profiles you need before the end of October, while the service still answers.
Warranty
Cambium warranty and RMA records.
Cambium’s published standard warranty is one year from the first end-user purchase, not transferable on resale, extendable up to five years, with RMAs handled through Cambium support. Airspan says it “has assumed all warranty and support commitments” for the product lines it bought. Nobody has said who honors warranty on ePMP, Wi-Fi, cnMatrix and NSE. For more on who to call for each line, see independent Cambium support after the administration.
Whoever ends up honoring a claim will want proof. Save now:
- A serial-number list for every unit, with model, site and install date.
- Proof of purchase: invoices or packing lists that show the serials and the purchase date.
- Any extended-warranty or advance-replacement contracts.
- Open RMA numbers, with the case history and shipping records for anything in transit.
- A screenshot of the warranty lookup result for each serial while the lookup still works.
We can’t file or process RMAs or warranty claims. That stays between you and the manufacturer that owns the line.
Configuration
Export your cnMaestro configuration.
Firmware and keys are useless without the configuration that goes on the device. For Wi-Fi, cnMatrix and NSE, Cambium says the cloud “may not support Enterprise devices post the end of October, 2026”, and nothing has been published about ePMP; for Airspan-owned lines, Airspan says there is “no plan to discontinue cnMaestro”. Export your inventory, AP groups and WLANs now, and note per-device overrides by hand. We treat October 31, 2026 as our planning date, not as a date Cambium has announced. The full step-by-step is on our cnMaestro on-premises migration page; for the decision itself, see what happens to cnMaestro Cloud after October 31.
Spares
Spares sizing worksheet.
If no one is going to ship you a replacement next week, the spare on your shelf is your warranty. Fill this in from your own inventory and failure history. We have not put numbers in it because yours are the only ones that matter.
| Column | What goes in it |
|---|---|
| Role | AP, subscriber module, backhaul end, access switch, gateway |
| Model and hardware revision | Exactly as on the label; revisions can need different firmware |
| Installed count | From your inventory export |
| Failures in the last 24 months | From your RMA and ticket history |
| Impact if one fails | Users or subscribers down, and for how long without a spare |
| Spares on the shelf | Count, tested and loaded with your archived firmware |
| Spares target | Your decision, based on the three columns above |
We don’t sell or broker Cambium spares. Ownership of each line is mapped on Airspan and Cambium: who owns each product line now.
FAQ
Firmware, license and RMA questions.
Where can I download Cambium firmware now?
From the Software Downloads section of the Cambium support site, support.cambiumnetworks.com/files, signed in to your own account. It was reachable on 2026-10-11. Downloads are limited to 10 files every 20 minutes, so make a list and pull it in batches.
Will Cambium firmware downloads go away?
Nobody has announced that. Airspan says it will move the lines it bought to a new support system by the end of October, and the lines it did not buy are still with the administrators. Where the files live in November is not settled, so archive what you need now.
How do I back up my Cambium license keys?
Sign in to the License Keys section of the Cambium support site and save every key with its serial number, product and feature, plus your cnMaestro X subscription details and support-contract numbers. Keep the file with your firmware archive.
Is LINKPlanner still available?
LINKPlanner is now Airspan’s. Desktop LINKPlanner was scheduled for removal from downloads on 2026-10-09, and the path-profile service may shut down as early as 2026-10-31; Airspan is investigating restoring the original 2026-11-27 date. Airspan says the cloud version is on schedule. Save your projects now.
Can you send me ePMP firmware?
No. We can’t distribute Cambium firmware, and you shouldn’t load firmware from a third party onto your network. Pull it from your own account on the Cambium support site.
How do I check my Cambium warranty?
Use the Warranty section of the Cambium support site with the unit’s serial number, and screenshot the result. Standard warranty is one year from the first end-user purchase and does not transfer on resale. Airspan has taken on warranty for the lines it bought.
Want it done for you?
Network audit & documentation, $1,250 per site.
A topology diagram, a device inventory with lifecycle dates, a configuration export and a port/VLAN map for each site. The inventory is the list of firmware and license keys you need to pull; your team pulls them from your own account. Standard engineering time beyond that is $225 an hour, with a written estimate for anything over two hours. What the audit includes.
Save this week, regardless
Firmware: current and previous, every model, hashed.
License keys with serials.
LINKPlanner projects.
Serials, invoices and open RMA numbers.
Sources
Sources, accessed 2026-10-11.
- Cambium Networks support site (Software Downloads, License Keys, Warranty): https://support.cambiumnetworks.com/
- Cambium Networks, Warranty: https://www.cambiumnetworks.com/support/warranty/
- Airspan Networks, Cambium fixed-wireless acquisition FAQ, version 6, updated 2026-10-05: https://airspan.com/cambiumfwbacquisition/
- Cambium Networks company statement, 2026-09-23: https://www.cambiumnetworks.com/wp-content/uploads/Cambium-Networks-Company-Statement-Sep-23-2026-Update.pdf
- Cambium Networks Form 8-K filed 2026-09-28 (Airspan sale; cnMaestro retained and licensed): https://www.sec.gov/Archives/edgar/data/0001738177/000119312526405403/cmbmf-20260922.htm
- Cambium Community thread 108849, guidance for cnMaestro enterprise customers (first post): https://community.cambiumnetworks.com/t/108849
- Cambium Community thread 109026, download rate limit (2026-09-30): https://community.cambiumnetworks.com/t/109026
- Cambium Community thread 108977, LINKPlanner notice: https://community.cambiumnetworks.com/t/108977
- Cambium Community thread 108864, ePMP 5.12.1 vs 5.3.0 operator report (2026-10-05): https://community.cambiumnetworks.com/t/108864
Ambio Edge Networks is an independent network engineering firm. We are not affiliated with, authorized by, or a partner of Cambium Networks, Airspan Networks, Univastu or the administrators (RSM UK). Product names are trademarks of their owners, used only to identify the equipment we work on.