看了论坛里的教程，要用线刷，但我看了我的机子里没有5针接口的，有个COM接口，是否是直接用根COM的线连接到电脑上就可以升级了？还有我是3001加1121的芯片，用哪个文件升级？（GX3001+GX1121+ES29LV160FB-70TG+GST GAIM-18R）试了直连电脑2 3 5 线，好像没反应？
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