Unless you are an electronics hobbyist, stick to the USB method above.
Always remember to source your files from to avoid malware or incompatible "repack" versions found on third-party forums. Sharp Lc-32le280x Firmware Download REPACK
: To restore original settings, go to Menu > Initial Setup > Reset . The default PIN is usually 1234 or 1111 . Support - Sharp Global Unless you are an electronics hobbyist, stick to