Firmware Release Notes
The Release Note Page documents the ongoing development of the Centro Business Router. It provides an overview of all technical and functional modifications implemented as part of software updates.
Entries are classified by their origin and impact:
- New Features: Documentation of newly added functions.
- System Optimizations: Adjustments to existing functions to increase stability or efficiency.
- Bug Fixes: Documentation of corrected software anomalies.
- Removed Features: Features that have been removed from the router.
Centro Business Firmware Newsletter
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Centro Business 3.0
Router Firmware 10.04.12 (B41+) - March 2026
Announcement
Action Required for PPP-Passthrough
In the router portal, a notification has been added regarding the future decommissioning of PPP-Passthrough. Customers are informed that switching to one of the recommended alternative solutions such as DMZ or
IP-Passthrough is mandatory.
New Features
New Telephony Platform
This firmware ensures that technical migrations to the new telephony platform in the InOne KMU / beem Office environment are enabled. (No customer impact)
Optimizations to LAN & DMZ Firewall
The firewall on the Centro Business 3.0 has been completely redesigned. The goal of these adjustments is to prevent unprotected router configurations while further increasing the security and stability of the Centro Business 3.0.
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The firewall now only offers the operating modes Strict (default) or Custom.
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The previous OFF mode is now intentionally only available as a Custom configuration to be performed by users (expert function).
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For each "firewall rule", the protocol can now be defined between Any or ICMP, GRE, AH, ESP.
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 (version 10.04.07.0006 and later), previous operating modes such as "Balanced", "OFF", or "CUSTOM" are automatically assigned to the "Custom" mode. Further details can be found under "CB3.0 New Firewall Behavior". Additionally, the display of firewall settings has been redesigned and optimized.
Increased Cybersecurity Requirements via EU Regulation "RED-DA"
The regulation in force since 01.08.2025 has led to the following measures:
- Increased password complexity requirements for
- WLAN (16 instead of 10 characters)
- VPN (12 instead of 10 characters)
- Router portal "admin" (12 instead of 10 characters)
- Removal of the "Central USB Storage Device" function
- Implementation of further security improvements
→ → The user will only be prompted to change the password length in the router portal if the previous configuration is modified. This can be canceled, but it is not recommended.
For illustration: Theoretical duration of a brute-force attack to crack the password: - 8 characters with 4 types = 30 min
- 10 characters with 4 types = 5 months
- 16 characters with 4 types = 92 billion years
Assistance for Password Strength
To improve general security, a display has been integrated into the password fields that evaluates the complexity of the chosen password (from weak to strong).
Use a password that meets at least the following criteria:
- min. 12 characters (for WLAN min. 16 characters)
- at least one uppercase letter
- at least one lowercase letter
- at least one number
- at least one special character
Removed Features
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
Firewall & Port Configuration:
An issue was fixed where port 443 was incorrectly blocked by the firewall after a firmware update. Manual adjustment of firewall rules to restore functionality is no longer required after this patch.
System Identification:
A bug was corrected that caused the router's serial number to be incorrectly reset to the default value "SN1" under certain conditions. Correct hardware identification is now permanently guaranteed.
Port Forwarding:
Occasionally, port forwardings did not work when the router switched to Internet Backup mode. (CB-11016)
TV Host:
In certain cases, a freeze of the image occurred after changing channels. (CB-11291)
Security:
Various security vulnerabilities have been closed.
Router Firmware 10.04.10 (B41) - January 2026
Important Information
This version is replaced by firmware 10.04.12. All updates from version 10.04.10 are included in the 10.04.12 release notes.
Router Firmware 10.04.04 (B40)
Publication/Introduction: May 2025 ➜ Download 
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:
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).
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 
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 
is published accordingly.
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