Hello, I see that there is another new update for Marklin CS1 Reloaded and ESU ECOS named V4.0. This update first install a rescue software and reformat all the internal flash memory. This is the same as you needed to do when used the ESU RELOADED update 2.5.1 rescue and 3.0.0. But that time it was only possible if you had the 2.5.1 file formatted for your CS1 serial number.

This time the V4 rescue file does not have any requirements of serial number but I don´t know if there is possible to update directly from Marklin V2.0.4 and what could be the risk to do this.

Does somebody tried to do the update?

I ask for this question because the ESU 59990 reloaded update for M CS1 is no longer available.

Thanks

Yes, I have performed this upgrade.

You need to purchase the ESU 59990 CS1 Reloaded update, which will be difficult since it is no longer available from ESU. You cannot perform the upgrade without it, as version 4.0 cannot be installed unless you are running version 3.7, and to get to version 3.7 from version 2.0.4, you need the CS1R update.

I purchased my 59990 from a North American dealer, after finding out that ESU in Europe were no longer supplying. I suggest you contact one of the North American dealers such as Eurorailhobbies or AJCKids to see if the update pack can still be supplied by ESU USA.

www.eurorailhobbies.com
www.ajckids.com

If there is a way to install the V4 update without paying for it, then the ESU forum will be the last place to share this information.

Bigdaddynz ordered his reloaded package from ESU USA at a time when ESU Germany no longer provided that upgrade.
Maybe this method still works ... (not free, but legal).

Thank you but I have a CS2. I want to sell my Cs1 to a friend but he needs DCC protocol.

As ESU update is no longer available and there is another new complete update I hoped this time could be possible but I think my CS1 will remain as CS2 slave all the life.