Hello,

LSZip will definitely never alter the contents of a file! It checks the CRC-32 before compression and the CRC-32 after decompression. Even if only one bit changes (e.g. file transmission error), you'll receive a decompression error.

BTW, the installer itself does not use LSZip. Only if you ZIP/UNZIP .zip files from within your installer then LSZip is used.

Friedrich