Windows Phone 8 build 8042

Windows Phone 8 build 8042 is an unconfirmed earliest build of Windows Phone 8, which was supposedly uploaded to the Chinese website BetaWorld on 20 October 2022, along with build 9513. It was claimed to be found on a prototype Qualcomm MSM8660 development kit. According to the information on the BetaWorld Wiki, this build is an UpdateOS build and uses the betta fish boot screen.