Beta Firmware And Beta App Test Invitation

Very nice that there is such an active community! In the last couple of years I have bought several products with Linkplay A31 boards in it. Now i am trying to update these older modules. When using the update tool, something goes wrong after uploading the firmware. There is a message saying “Firmware size out of range, please burn the all burning version.” The current firmware is 3.6.4715 Can anyone help me understand what I am doing wrong?