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Use Termux (a terminal emulator for Android) to install xdelta3 via pkg install xdelta3 , then manually run: xdelta patcher android
xdelta3 -e -s source_file.bin updated_file.bin patch.xdelta xdelta patcher android
Older devices (Android 4–6) struggle with files over 4GB. Fix: Split the source file into chunks (PC-only workaround) or use a web-based patcher. xdelta patcher android
