64s to 64sJ, cross flashing "system file missing", maybe HWID check

I want to buy a garmin TFcard map: Japan hiking TOPO plus v3
on amazon.co.jp and use it on my gpsmap 64s。

https://www.amazon.co.jp/gp/product/...RRNFXZEFG11HHV




But many people tell me that the map only works on 64sJ（Japan)
because the map words are based on shift-jis code(64sJ)。
UTF-8 device(64s) can not use this Japanese word TOPO map.

But i love hiking so much and this TOPO map.

After using RGN_Tool to mix 64s SW Version 4.5（HWID 1859） and 64SJ Version 2.10(new HWID 1859)
and cross flashing into my device,boot normally, but "System Software missing"

OMG :( crying... my pool garmin 64s...

USB mode is OK, i can read the new XML file, 64sJ.
Garmin Exress.exe show 64sJ too and unit can flash back 64s.

After browsing many websites "years"...

finally, maybe the same situation i have found:
http://www.gpspower.net/garmin-recei...nt-region.html
"64s to a Different Region"

and
@kunik finally help him fix this problem:
64s SEA fw_all.bin checks for HWID and UnitID and displays "SYSTEM SOFTWARE MISSING" in case of mismatch.
Try using the attached fw_all.bin v2.40 with the above check DISABLE.

It is so wonderful. 64s to 64s SEA works, maybe 64sJ also.

How can I make a firwares without HWID check？

or some good kind people send me a patched fw_all.bin(gpsmap 64sJ) for HWID or UnitID check DISABLE.


I want to try this fw to buy the TOPO map.
Pls help me, so appreciate. THX