@hotsport
Please say what conversion methods have you already tried without success. That will save us suggesting the common methods unnecessarily.

If you've already tried everything, it may mean that such a conversion is either unsafe or impossible. For instance, attempting conversion with non-matching PCB P/Ns always will result in failure and often in an irrecoverable hard-bricked device. Look for 1.0.5.-. in a hex reader (where "." is wildcard character) located in the respective firmwares which will tell you if there are common PCB P/Ns between the US/EU and APEC devices and importantly then check your actual device physically has one of those listed in the donor APEC firmware: [Only registered and activated users can see links. ] (Post #7 and later explanatory posts in that thread).