@karaoke
This has been a known issue with US/EU devices using Asian maps' JCVs for some time. The asian jcv files are encrypted differently to the US/EU/AU jcv files and will either crash and reboot a US/EU fw device or show a black screen dependent on model, whenever a non-compatible JunctionView is encountered on a route. Using the map only will not cause any issues.
You could try converting to TH fw using the original US boot bin but I don't think it will work with simple hybrid fw conversion.
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