I would assume it can`t decode 4K channels because its only a HD model.
Amiko Android, Enigma2 and Spark Receivers
Amiko Android, Enigma2 and Spark Receivers. Discuss everything related to Amiko here. Includes Kodi, MCAS, Oscam, Amiko A3 firmware, Amiko 3 Combo firmware, Amiko A4 firmware and OpenATV, OpenSPA and PurE2 images for Amiko A5 and A6 models.