First, download the file from a reliable source. The Open GApps project itself does not directly host older builds, but official mirrors exist:
Understanding open-gapps-arm-7.1-pico-20220215: A Legacy Android Companion open-gapps-arm-7.1-pico-20220215
: The Android version. This package is strictly for Android 7.1 Nougat . First, download the file from a reliable source
: Your device must have an ARM (32-bit) processor. It will not work on ARM64 or x86 devices. open-gapps-arm-7.1-pico-20220215