Hi jinzhanhua !!!

I got a same problem in OREGON 550 US to Korean.
I used RGN_TOOL Ver 0.74... But always "software missing"
Can you convert USA to CHN firmware ??
How can you do that ? Please Let me know !!!

I have try all firmware combinations.....

If it has another checker.... it will be inside boot.bin .

How can I find Hex code ?