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Firmware Release Notes

Find details on past and current firmware versions here.

Centro Business 3.0​

Router Firmware 10.04.07.0006 (B41)

Publication/Introduction: November 2025 ➜ Download


Announcement​

caution
Action required for PPP Passthrough​

The router portal now draws attention to the future discontinuation of PPP Passthrough. Customers are informed that switching to one of the recommended alternative solutions such as DMZ or IP Passthrough is mandatory.

New Functions​

New Telephony Platform​

This firmware ensures that technical migrations to the new telephony platform in the InOne SME / beem Office environment are made possible. (No customer impact)


Optimizations of the LAN & DMZ Firewall​

The Firewall on the Centro Business 3.0 has been completely revised. The aim of the adjustments is to prevent unprotected router configurations and simultaneously further increase the security and stability of the Centro Business 3.0.

  • The firewall now only offers the operating mode Strict (default) or Custom.

  • The previous OFF mode is intended to be used only as a custom configuration by users (Expert function).

  • Now, the protocol can be defined as Any or ICMP, GRE, AH, ESP per "Firewall Rule".

warning
Important:​

A firmware update or a backup & restore (CB 2.0 → CB 3.0 or CB 3.0 → CB 3.0) does not change the existing firewall behavior or the configured firewall rules. However, with the B41 release (from version 10.04.07.0006), previous operating modes such as "Balanced", "OFF", or "CUSTOM" are automatically assigned to the "Custom" mode. For more information, see also the document ➜ CB3_B41_Firewall_behavior img. Additionally, the display of the firewall settings has been revised and optimized.



Increased Cybersecurity Requirements due to EU Regulation "RED-DA"​

The regulation that entered into force on 01.08.2025 has led to the following measures:

  • Increased password complexity requirements for WLAN, VPN, and Router Portal
  • Removal of the "Central USB Storage Device" function
  • Implementation of further security improvements

Assistance with Password Strength​

To improve general security, a display has been integrated into the password fields that evaluates the complexity of the selected password (from weak to strong).

tip
Use a password that meets at least the following criteria:​
  • min. 12 characters
  • min. one uppercase letter
  • min. one lowercase letter
  • min. one number
  • min. one special character

danger
Removal of the "Central USB Storage Device" Function​

For security and compatibility reasons, this obsolete function is being removed from the router portal.
Details can be found under Central USB Storage Device


Fixed Bugs​

Port Forwarding​

Occasionally, port forwardings did not work when the router switched to Internet Backup mode. (CB-11016)

TV Host​

In certain cases, an image freeze occurred after changing channels. (CB-11291)

Security​

Various security gaps were closed.

Router Firmware 10.04.04 (B40)

Publication/Introduction: May 2025 ➜ Download img

Preparation​

New Telephony Platform**​

The firmware ensures that test phases and technical migrations with a new telephony platform in the InONE SME environment are made possible. (No customer impact)


New Functions​

beemNet​

With the introduction of the new security offering at Swisscom B2B, the router portal indicates that DynDNS and Port Forwarding cannot be used, or can only be used after prior definition of corresponding security rules, when beemNet is activated, depending on the selected Security Edition. Further information can be found at: www.swisscom.ch/beem

Switching the Entire Mesh WLAN On and Off​

(only in combination with Business WLAN Box) The firmware now supports central control of the Mesh WLAN via the WLAN button on the Centro Business 3.0. This allows the visible WLAN in the entire Mesh network (incl. Business WLAN Box) to be switched off or back on.

DynDNS​

The option for the custom DynDNS URL now also supports HTTPS. (CB-10790)


Fixed Bugs​

GRE Tunnel​

GRE Tunnel: When a GRE tunnel was used with a security gateway/firewall behind the Centro Business 3.0, this traffic showed poor performance. (CB-9699)

IPSec VPN​

When an IPSec VPN tunnel was used with a security gateway/firewall behind the Centro Business 3.0, this traffic showed poor performance (approx. 500MB). (CB-10403)

QoS​

With XGS-PON, an error in QoS handling was resolved. (CB-9712)

Business WLAN Box:​

Various improvements in the wizard and Mesh technology. (CB-9624, CB-9978, CB-10000, CB-10319, CB-10418)

Older Firmware Versions

Centro Business 2.0​

Router Firmware 9.52.20 (B19)

Publication/Introduction: November 2025 / Q1-2026 ➜ Download


Announcement:​

caution
Action required for PPP Passthrough​

The router portal now draws attention to the future discontinuation of PPP Passthrough. Customers are informed that switching to one of the recommended alternative solutions such as DMZ or IP Passthrough is mandatory.

New Functions​

New Telephony Platform​

This firmware ensures that technical migrations to the new telephony platform in the InOne SME / beem Office environment are made possible. (No customer impact)

DynDNS​

The option for the custom DynDNS URL now also supports HTTPS. (CB-10790)

Assistance with Password Strength​

To improve general security, a display has been integrated into the password fields that evaluates the complexity of the selected password (from weak to strong).

tip
Use a password that meets at least the following criteria:​
  • min. 12 characters
  • min. one uppercase letter
  • min. one lowercase letter
  • min. one number
  • min. one special character

Fixed Bugs​

VoIP​

In rare cases, the INVITE was not answered by the router, leading to call termination. (CB-11227)

TV Host​

In certain situations, an image freeze occurred after changing channels. (CB-11479)

Internet Backup: When WAN ETH failover was activated and the Internet Backup stick was subsequently plugged in, a faulty state occurred: Failover no longer worked and the WAN ETH failover option could not be deactivated. (CB-10969)

Security​

Various security gaps were closed.

Router Firmware 9.52.18 (B18)

Publication/Introduction: May 2025 ➜ Download img

Preparation​

New Telephony Platform​

The firmware ensures that test phases and technical migrations with a new telephony platform in the InONE SME environment are made possible. (No customer impact)

New Functions​

beemNet​

With the introduction of the new security offering at Swisscom B2B, the router portal indicates that DynDNS and Port Forwarding cannot be used, or can only be used after prior definition of corresponding security rules, when beemNet is activated, depending on the selected Security Edition. Further information can be found at: www.swisscom.ch/beem

Fixed Bugs​

  • Backup/Restore: Firewall rules are restored. (CB-10163)
  • Missing notification when replacing the SFP module added. (CB-9145)
  • DECT: Optimization of the display of missed calls on DECT handsets (CB-6280)
Router Firmware 9.52.14 (B17)

Publication/Introduction: November 2023

New Functions​

  • Internet Backup: The firmware supports the replacement product for the USB failover Internet Backup stick (Alcatel IK41VE1).

Fixed Bugs​

  • WAN IP: In rare cases, the router does not obtain a WAN IP address after a restart. (CB-8145)
  • ATA: When the Centro Business 2 switches to Internet Backup, incoming calls to the analog telephone interface do not work. (CB-8801)
  • Backup & Restore: Certain settings are not saved in the backup file. (CB-8742)
  • USB Internet Backup: On the local web portal, the timestamp for Internet Backup is incorrectly indicated in UTC instead of local time. (CB-8406)
  • Change Web Portal Password: The local web portal password cannot be changed if the new password contains a "0". (CB-9133)
  • LAN Port 1: When the DMZ option is deactivated, Swisscom TV on LAN Port 1 does not work. (CB-8925)
  • Smart Business Connect Telephony: One channel per number via SIP-TA: The number of simultaneous calls (incoming or outgoing) was corrected to 1 active call per configured telephone number. (CB-8737)
  • Security: Various security gaps were resolved. (CB-8448, CB-7551, CB-8414, CB-8556)
  • General: Various stability problems resolved
Older Firmware Versions

FAQ - Firmware Release-Note​

Where can I see the current schedule during a firmware rollout phase??

Depending on the router model, Swisscom plans 1-2 rollouts per year. Routers are usually updated in tranches Tuesday through Thursday during the night (between 2:00 - 6:00) via "Device Management". This leads to a connection interruption of approx. 10 minutes. The Centro Business 2.0 / 3.0 Rollout Plan img is published accordingly.

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