Today my CS3 with direct connection notified me about an available minor update.

Lokicons 2.6.0(0) 21.08.2025 **
spielewelt 2.5.2(0) 29.08.2025 **
Busgeräte 2.6.0(6) 26.08.2025 ** also includes GFP2 for boosters (v3.96) and MS2 (v5.3) handheld controller
Decoder FW V3.3.6.2/V3.5.1.1 27.07.2025 ** includes new FW for the upcoming mSD3.5 decoder with larger memory

Should also be an update for CS2 and files will come later on the website for USB update.

The update went smoothly

There are also Updates for CS 2 ( 60215 / 60214 / 60213 ) to Software-version 4.3.2(4) which includes following :

- MS2 Software-Update V5.3 for Marklin 60653 / 60657 and Trix 66950 / 66955 and GFP-Update V1.70 for Marklin 60116/60114/60113/60112 Track Box

- GFP2 Update V3.96 for 60215 / 60214 / 60213 and 60174 / 60175 MFX Boosters. ( The GFP2 is also installed in CS 3/3+ for Communication with CS2 in Master / Slave Setup)

- MLD3 / MSD3 - Decoder Firmware V 3.3.6.2 is also transfered to CS 2.

- MSD/3.5 - Decoder Firmware V 3.5.1.1 for 6 new Decoders with 256 MB Sound-Memory and Support for RailCom is also transfered to CS 2.


On Marklin's Website : https://www.maerklin.de/de/service/downloads/msw-updates

there also a new Version for the Marklin 60667 - MS2 WLAN unit

I have discovered from the Dutch website that at least the CS2 likes you to tell it which PSU is attached before the update. I didn't know this and discovered it by chance. My CS2 and MS2 all updated first try, there is a note you need to reboot with the network attached to get the update to work smoothly which again is mentioned on some pages.

Like an old monochrome Ecos I find it impressive how long these elderly controllers are supported.

If everybody knew this apologies for wasting you time but I only found it by accident and my updates went textbook smoothly afterwards

I am referring to the Marklin German website. I believe if you opt for the English version the instructions are not so comprehensive which led me to be suspicious I was not getting the whole update and a trawl that throw up, in Dutch initially, the longer instructions. I was just trying to help any other English speakers who believed the website would offer the full instructions and notes in both languages and thus fail to get the full, appropriate install. But if most people already know to only trust the original German section of the website I'll remember that for myself in future.

The English version:-

The software for the Central Station 2 is maintained continuously and is being developed further. Ideas from users are accepted, the operation is adjusted, and new functions for even more ease and realistic operation are being added. On this page, you will find the current software to keep your Central Station 2 constantly at the latest level.

An additional program for expanding the operation of the CS2 on your PC screen can be found further down on the page under Point 3.

Information for Users of the Märklin Mobile Station 2 (60653) and Trix Mobile Station 2 (66950):


An update of the Mobile Station is done by connecting it to a Central Station. After that, the Mobile Station will show the current level for the software. Mobile Stations can also be updated among one another starting with Software Version 1.81 for the Mobile Station 2. The Mobile Station 2 must have at least Version 1.83 for locomotives from the new World of Operation.

Note: Software is now included to update the 60653 Mobile Station to Version 3.55.
or Trix 66950/ 66955 to version 3.121.

Central Station 2
Download-Area
Download Software Updates and Programs right now
By clicking on the button "I have read the licensing agreement and agree to it", you accept all of the conditions of this agreement. If you do not agree with some condition of this licensing agreement, then please abort this procedure and delete or destroy all copies of the software in your possession.

If you agree to the <link en service downloads licence-agreement _blank internal-link external link in new>license agreement, confirm by clicking on the check box. After that, the download area will open

Google translate of the German:-

The Central Station 2 software is continuously maintained and developed. User suggestions are incorporated, the controls are adjusted, and new functions are added for even greater convenience and realistic operation. On this page, you will find the latest software to keep your Central Station 2 always up to date.

An additional program for expanding the operation of the CS2 on your PC screen can be found further down the page under point 3.

Information for users of the Märklin Mobile Station 2 (60653/60657) and Trix Mobile Station 2 (66950/66955): The Mobile Station is updated by connecting it to a Central Station. The Mobile Station then displays the current software version. Starting with Mobile Station 2 software version 1.81, the Mobile Stations can also be updated with each other. For the locomotives in the new game world, at least version 1.83 is required in Mobile Station 2.

Version 4.3.2(4) includes software for updating the Mobile Station 60653/60657/Trix 66950/Trix 66955 to version 5.3 with Gleisbox v1.70; includes GFP2 for the central unit and booster version 3.96; includes decoder firmware mLD3/mSD3 v3.3.6.2 and mSD3.5 v3.5.1.1; as of September 17, 2025.
Please check the power supply settings with the GFP update: Settings_f_Switching_Power_Supplies

Central Station 2
1 - Online update for the Central Station 2
2 - USB stick update for the Central Station 2
3 - Computer connection of the Central Station 2
Download area
Download software updates and programs now
By clicking the "I have read and agree to the license agreement" button, you agree to all terms of this agreement. If you do not agree to any term of this License Agreement, please cancel this process and delete or destroy all copies of the software in your possession.

If you agree to the License Agreement, check the box. The download area will then open.

I installed 5.3 and did not find any important changes.

Menu items that are menus themselves are now prefixed with ">". Good for beginners, but long-time users already know where a new menu opens.
Update process was flawless.

Hello, after the last update my CS2 and booster no longer work with the trafo 60052 that I have always used.
Message about incorrect input voltage
In the table they write 16 volts, but the transformer without load gives 18 volts...
I wonder who the expert programmer of GFP is

Assuming you have selected the right power supply in the configuration, then another possibility is the input voltage.

What is the voltage in your household power plug?

The EU standard is 230 volts, but EU also allows for +/- 10 procent. Unfortunately, that might give problems with old-style transformers when the voltage is too high.

I have a similar "problem" with 245-247 volts in my house. Tried to complain to the power company, but it's within EU spec.
and with my old 6002 I got a track voltage over 24v idle with my 60175 Booster. On the CS3, the CS3 then display the booster track voltage as in the red zone, as the limit is 24v.

So I just acquired an "Australian" 6003 240v transformer to power my old 6021. (I have the 6021 connected to my CS3)
Previously, Marklin allowed it, but it seems like they have tightened the parameters in recent updates.
My CS3 is updated with the latest firmware, and if I connect the 6003 to my booster, it's still allowed. (Have not used the old 6002 recently, but I suspect it will not be allowed anymore).

So it might be that your track voltage is too high, because of the too high input voltage.

I'm not familiar with this power supply setting option. Can you be more specific?
If this is new, it should be written up and shared widely to prevent thousands of CS2 and booster users from crashing after the latest update.

Test on CS2 ok, tomorrow I'll test the booster of our club layout

That would require transmitting data, not just supplying power.
This would make power supplies even more expensive.
USB power supplies can handle this...

But the CS2 has 2 power pins for AC and 2 power pins for DC. So the CS2 could detect whether it is running on AC or DC and allow higher voltages for AC.
Not sure if the hardware can detect which power pins are used.