: Refers to the partition layout. "A-only" devices have a single set of partitions (system, vendor, etc.), unlike newer "A/B" devices that use dual slots for seamless updates. .img : The raw disk image file.
: A high-compression archive format used to reduce download sizes for these large system files. Why Use "Systemarm32aonlyimgxz full"?
Developers and enthusiasts use these "full" images to upgrade devices that are no longer supported by their original manufacturers. Installing a GSI can: Generic System Images – Telegram
: Indicates this is the OS partition image that replaces your device's stock software.
