Method for managing the operating mode of a device comprising means for transferring an audiovisual source and means for reproducing an audio signal, the device being connected to a television set by means of a connection of the high definition multimedia interface HDMI type, characterised in that the method comprises the steps, performed by the device, of: - attributing an audiovisual source logic address, - sending a request comprising the audiovisual source logic address attributed for obtaining the version of the HDMI specification of the television set, - operating in an adapted operating mode if the version of the HDMI specification implemented by the television set is lower than a version of the HDMI 2.0 specification, - and, if the television set responds to the request message by indicating a version equal to or subsequent to the version of the HDMI 2.0 specification: - attributing an audio system logic address, - sending a second request comprising the audio system logic address attributed for obtaining the version of the HDMI specification of the television set, - attributing an audiovisual source logic address, - sending a third request comprising the audiovisual source logic address attributed for obtaining the version of the HDMI specification of the television set, - if the television set has responded to each of the second and third requests (E306, E308), determining that the television set is able to operate in accordance with the HDMI 2.0 specification and entering an operating mode in accordance with the HDMI 2.0 or higher specification, - operating in the adapted operating mode if the television set has not responded to each of the second and third requests (E306, E308), the adapted operation being: - either an operating mode in which the device attributes to itself an audiovisual source logic address in place of an audio system logic address for operating in the audiovisual source mode or attributes to itself an audio system logic address in place of an audiovisual source logic address for operating in the audio source mode, - or an operating mode in which the television set attributes a first physical address to the device and the device attributes to itself a second physical address. - attributing an audiovisual source logic address, - sending a request comprising the audiovisual source logic address attributed for obtaining the version of the HDMI specification of the television set, - operating in an adapted operating mode if the version of the HDMI specification implemented by the television set is lower than a version of the HDMI 2.0 specification, - and, if the television set responds to the request message by indicating a version equal to or subsequent to the version of the HDMI 2.0 specification: - attributing an audio system logic address, - sending a second request comprising the audio system logic address attributed for obtaining the version of the HDMI specification of the television set, - attributing an audiovisual source logic address, - sending a third request comprising the audiovisual source logic address attributed for obtaining the version of the HDMI specification of the television set, - if the television set has responded to each of the second and third requests (E306, E308), determining that the television set is able to operate in accordance with the HDMI 2.0 specification and entering an operating mode in accordance with the HDMI 2.0 or higher specification, - operating in the adapted operating mode if the television set has not responded to each of the second and third requests (E306, E308), - attributing an audio system logic address, - sending a second request comprising the audio system logic address attributed for obtaining the version of the HDMI specification of the television set, - attributing an audiovisual source logic address, - sending a third request comprising the audiovisual source logic address attributed for obtaining the version of the HDMI specification of the television set, - if the television set has responded to each of the second and third requests (E306, E308), determining that the television set is able to operate in accordance with the HDMI 2.0 specification and entering an operating mode in accordance with the HDMI 2.0 or higher specification, - operating in the adapted operating mode if the television set has not responded to each of the second and third requests (E306, E308), - either an operating mode in which the device attributes to itself an audiovisual source logic address in place of an audio system logic address for operating in the audiovisual source mode or attributes to itself an audio system logic address in place of an audiovisual source logic address for operating in the audio source mode, - or an operating mode in which the television set attributes a first physical address to the device and the device attributes to itself a second physical address.