https://h30471.www3.hp.com/t5/da-yin-ji-shi-yong-xiang-guan-wen-ti/hui-pu7740gu-jian1605A-zen-me-sheng-ji-dao1851A-huo-zhe-geng-gao/m-p/1091187#M243703 <P>您好</P><P>升级固件存在风险，过保机器建议联系维修中心处理。</P><P>更新方法：</P><P>通过电脑浏览器登录打印机web--工具选项--在打印机更新部分，单击固件更新。</P><P>操作过程中电脑和打印机不能关机，不能断电，直到完成更新。</P> Mon, 17 May 2021 01:19:36 GMT 双鱼座鲨鱼 2021-05-17T01:19:36Z https://h30471.www3.hp.com/t5/da-yin-ji-shi-yong-xiang-guan-wen-ti/hui-pu7740gu-jian1605A-zen-me-sheng-ji-dao1851A-huo-zhe-geng-gao/m-p/1091172#M243698 <P>惠普7740固件1605A怎么升级到1851A或者更高？我尝试联网升级都失败。操作系统是win7 64位&nbsp;</P> Sun, 16 May 2021 14:24:35 GMT https://h30471.www3.hp.com/t5/da-yin-ji-shi-yong-xiang-guan-wen-ti/hui-pu7740gu-jian1605A-zen-me-sheng-ji-dao1851A-huo-zhe-geng-gao/m-p/1091172#M243698 64276360 2021-05-16T14:24:35Z https://h30471.www3.hp.com/t5/da-yin-ji-shi-yong-xiang-guan-wen-ti/hui-pu7740gu-jian1605A-zen-me-sheng-ji-dao1851A-huo-zhe-geng-gao/m-p/1091187#M243703 <P>您好</P><P>升级固件存在风险，过保机器建议联系维修中心处理。</P><P>更新方法：</P><P>通过电脑浏览器登录打印机web--工具选项--在打印机更新部分，单击固件更新。</P><P>操作过程中电脑和打印机不能关机，不能断电，直到完成更新。</P> Mon, 17 May 2021 01:19:36 GMT https://h30471.www3.hp.com/t5/da-yin-ji-shi-yong-xiang-guan-wen-ti/hui-pu7740gu-jian1605A-zen-me-sheng-ji-dao1851A-huo-zhe-geng-gao/m-p/1091187#M243703 双鱼座鲨鱼 2021-05-17T01:19:36Z