MD5 indicated in: https://developer.arm.com/-/media/Files/downloads/gnu/11.3.rel1/binrel/arm-gnu-toolchain-11.3.rel1-mingw-w64-i686-arm-none-eabi.zip.asc
is: f1ff0b48304dbc4ff558f0753a3a8860
Downloding this file: https://developer.arm.com/-/media/Files/downloads/gnu/11.3.rel1/binrel/arm-gnu-toolchain-11.3.rel1-mingw-w64-i686-arm-none-eabi.zip
Calculated MD5: b287cf60045910dd56c56cdc2a490049
I confirm it. Also sha256 is not matching.