Recently, a new firmware for Vontar X4 has been released, update 20230105. In addition, the same firmware also applies to HK1 RBOX X4 and TranSpeed X4 TV
Transpeed X4 Android 11 TV Box Amlogic S905X4 3D BT4.0 4G 32G 64G 128G Fast Dual Wifi Media Player 4K 8K Set top box
Firmware for HK1 RBOX / VONTAR x4 / TranSpeed x4 with S905X4 (01-05-2023)
VONTAR X4: 4GB de RAM y Amlogic S905X4, el Chollo del Aniversario de AliExpress
HK1/Vontar x4/Transpeed x4 [Android], [TV Box][Amlogic s905x4]
Transpeed 8K 3D Android 11.0 TV Box Amlogic S905X4 X4 4K LAN 1000M BT4.0 2.4G&5.8G Fast Wifi Media Player Set top box - AliExpress
Report about Amlogic S905X4 HK1 RBOX X4 - Hardware - CoreELEC Forums
HK1/Vontar x4/Transpeed x4 [Android], [TV Box][Amlogic s905x4], Page 7
Report about Amlogic S905X4 HK1 RBOX X4 - Hardware - CoreELEC Forums
HK1/Vontar x4/Transpeed x4 [Android], [TV Box][Amlogic s905x4], Page 7
Report about Amlogic S905X4 HK1 RBOX X4 - Hardware - CoreELEC Forums
X96 X4, análisis: un TV-Box con el potente SoC Amlogic S905X4 y Android 11
Firmware for the Transpeed X4S Android Box with S905x4 SoC (05-22-2020)
Amlogic S905x4 Tv Box - Set Top Box - AliExpress
Firmware for HK1 RBOX / VONTAR x4 / TranSpeed x4 with S905X4 (01-05-2023)