The latest versions of software for TELE System receivers are available in the DOWNLOAD section of this homepage together with the instructions.
Remember that the update should only be made if problems appear in the appliance's operation.
Before installing the update it is essential that you control the software version currently installed on the decoder (see corresponding option in the receiver menu). If the version on the decoder is the same as the one on the homepage, do not update the decoder since it would be pointless.