Perfect, thanks for sharing the method and the screenshot.
Yes, you're correct — on the IAW 6LP.B the pin code typically sits around offset 0x40F0–0x40F4 in the EEPROM section of the full BIN dump, and you reverse (mirror) the hex string to get the working code.
Your example is clear: if the raw bytes at that offset read 54 A6, the actual pin code is 6A45 (reversed character order).
For anyone else reading this thread: once you locate the 4-byte pin area in your IAW 6LP.B dump, just reverse the hex digits to recover the code. The exact offset can shift slightly depending on hardware/software revision, but 0x40F0–0x40F4 is the standard location for most variants.