Due to high number of requests let me make some short summary of units that can be installed in Octavia III cars. I have focused only on MIB2 / MIB2.5 units, to indicate differences between them. Simplified Bolero MY15 unit 5Q0035819 (without DAB) or 5Q0035820 (with DAB) Simplified Bolero MY16 unit 5Q0035819A (without DAB) or 5Q0035820A (with DAB) Simplified Bolero MY17 unit 5Q0035819B (without DAB) or 5Q0035820B (with DAB) Simplified Bolero MY18 unit 5Q0035819C (without DAB) or 5Q0035820C (with DAB) Bolero MY15 unit 5Q0035840 (without DAB) or 5Q0035842 (with DAB) Bolero MY16 unit 5Q0035840A (without DAB) or 5Q0035842A (with DAB) Bolero MY17 unit 5Q0035840B (without DAB) or 5Q0035842B (with DAB) Bolero MY18 unit 5Q0035840C (without DAB) or 5Q0035842C (with DAB) Bolero MY19 unit 565035840 (without DAB) or 565035842 (with DAB) Amundsen MY16 unit 5Q0035864A (without DAB) or 5Q0035874A (with DAB) Amundsen MY17 unit 5Q0035864B (without DAB) or 5Q0035874B (with DAB) Amundsen MY18 unit 5Q0035864C (without DAB) or 5Q0035874C (with DAB) Amundsen MY19 unit 565035864 (without DAB) or 565035874 (with DAB) Columbus MIB2 unit 3V0035020x (with DAB, with regular Bluetooth, without LTE Modem) Columbus MIB2 unit 3V0035021x (with DAB, with premium Bluetooth, with LTE Modem) Columbus MIB2 unit 3V0035043x (without DAB, with regular Bluetooth, without LTE Modem) Columbus MIB2 unit 3V0035044x (without DAB, with premium Bluetooth, with LTE Modem) Columbus MIB2.5 unit 565035020x (with DAB, with regular Bluetooth, without LTE Modem) Columbus MIB2.5 unit 565035021x (with DAB, with premium Bluetooth, with LTE Modem) Columbus MIB2.5 unit 565035043x (without DAB, with regular Bluetooth, without LTE Modem) Columbus MIB2.5 unit 565035044x (without DAB, with premium Bluetooth, with LTE Modem) All MIB2 units (as well as Columbus MIB1 which is not listed here) work with 800x480 pixels screens, either 6.5 or 8 inch. MY15 unit support MirrorLink only (no support for SmartLink). SImplified Bolero units do not support rear view camera and voice command. Simplified Bolero, Bolero and Amundsen MY15 and MY16 have old style (rotating, monochrome) menu, with only 1 skin having 5 memory buttons in radio and phone menu. They don't support for APP key in 8 inch FL screens. Simplified Bolero, Bolero and Amundsen MY17 have old style (rotating, monochrome) menu, with 2 skins having 5 or 6 memory buttons in radio and phone menu. It may also support Media Command (depending on FEC.SWaP codes installed). Simplified Bolero, Bolero and Amundsen MY18 has both old style (rotating, monochrome) and new style (pictures, color) menu, with 2 skins having 5 or 6 memory buttons in radio and phone menu. It may also support Media Command (depending on FEC. SWaP codes installed). Columbus units have built-in DVD drive and HDD for maps and audio / video files. Only Columbus units can play video files from USB/CD/DVD/SD. Every MIB2 Columbus unit can be reworked into MIB2.5 unit if required. MIB2.5 Columbus requires new 9.2" screen 5E0919606D. Every Columbus unit can drive directly subwoofer and central speaker (although this setup is not officially supported by Skoda). "x" at the end of Columbus units model number is letter A/B/C/D. Can also be missing. It makes no difference, just indicates original SW release family. Every of listed above units can be reworked into Plug&Play version (no need to visit SKODA dealer).