Windows 8 build 8520

Windows 8 build 8520 is a build of Windows 8, which at the time was released to Microsoft partners through the Ecosystem Engineering Access Program (EEAP). It was first uploaded to BetaArchive on 3 February 2020 in the x86 and ARM32 architectures in the Czech and Traditional Chinese (Hong Kong SAR variant) languages respectively; the British English and Arabic language versions of this build in the ARM32 architecture were later uploaded on 4 May 2022.

Changes

 * Reverted the set of wallpapers to the ones included in earlier builds.
 * The Start screen backgrounds seen in the RTM release have been introduced.

Watermark

 * In the Czech version, the Microsoft Confidential watermark appears to be pseudo-localized and in English.
 * In the Arabic and Traditional Chinese version, the Microsoft Confidential watermark is in English.

Timebomb
This build contains a broken timebomb and as a result can be installed on the current date.