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For data recovery specifically, a hardware write-blocker (like a Forensic Bridge) plus dd on Linux is infinitely more powerful and safer than any old XTR tool.
A reverse engineer would load the target XTR software into a disassembler (like IDA Pro or Ghidra). They would locate the CALL instruction that jumps to the activation routine. Instead of noting memory addresses (which change with each software version), they would note the bytes around that call. This forms a "signature." xtr ultimate patch