1手机的未知来源没有打开，手机设置常规其他设置安全与隐私未知来源允许安装未知来源应用，打开开关即可2手机内存已满，建议清理下手机的垃圾，保持内存留有足够的空间3首选安装位置不对，进入设置存储首选安装位置选择为由系统决定，再重新下载安装4安装软件的版本低于现有；嗨应该是你所用的版本和最新的版本之间相差了太多，所以导致使用OTA方法升级失败建议你使用完整包的方法升级1下载适合你的小米手机卡刷完整包，在系统更新的界面下点击菜单键～下载最新完整包或者#，或者这个链接11html然后放到。
2接着打开“MicrosoftOfficeWordExcel 和 PowerPoint文件格式兼容包”3然后在弹出的界面中点击“下载”4接着在弹出的对话框中点击“单击此处”开始下载5下载完成后，点击“运行”6最后打开一个word文档进行验证7发现可以打开word2007文档，证明将2003版本excel升级到更高版本了；vivo X20手机升级方法进入手机设置系统升级中检测版本，若手机有新系统提示更新，在系统升级界面点击“下载并安装”??$??m??mo?L?D??;?%g??w??ŷ???ovH0??a?5??*??ؒ??l͛?S?iy??r?O7????%L]??%?? ?hk ????>v1?HB??????d\?(e o Ix?>3?6BS%????( ??f$?h?? ???eԎ???H? ??`ݶ f{?Fo?Y????@00uMb ?z-??XI$ &?gf???7Ӵ?u|'K.?oP P???F?.??o??9B<~. ????[????<٭?$?????{1?A??.?bKx?L??????'?u8n5? ??e ,]?H????V??Ww?$?C?e l??|zys??K?i-? q?ݬbk, wnG ??;?? ~ ?e?r͒???~' 1`V⦫?-*[??L?K?'2@????仪??n???2?N? ?ƶ?G???i/U??'E?@?`H???;J?? ????? +J?n#???6ڴ?ĹG???N?G?'?Z!??? ??Wi??NJ?@???A??Z|?[??$q}i?ҷ?QbtTEC$??m??mo?L?D??;?%g??w??ŷ???ovH0??a?5??*??ؒ??l͛?S?iy??r?O7????%L]??%?? ?hk ????>v1?HB??????d\?(e o Ix?>3?6BS%????( ??f$?h?? ???eԎ???H? ??`ݶ f{?Fo?Y????@00uMb ?z-??XI$ &?gf???7Ӵ?u|'K.?oP P???F?.??o??9B<~. ????[????<٭?$?????{1?A??.?bKx?L??????'?u8n5? ??e ,]?H????V??Ww?$?C?e l??|zys??K?i-? q?ݬbk, wnG ??;?? ~ ?e?r͒???~' 1`V⦫?-*[??L?K?'2@????仪??n???2?N? ?ƶ?G???i/U??'E?@?`H???;J?? ????? +J?n#???6ڴ?ĹG???N?G?'?Z!??? ??Wi??NJ?@???A??Z|?[??$q}i?ҷ?QbtTEC$??m??mo?L?D??;?%g??w??ŷ???ovH0??a?5??*??ؒ??l͛?S?iy??r?O7????%L]??%?? ?hk ????>v1?HB??????d\?(e o Ix?>3?6BS%????( ??f$?h?? ???eԎ???H? ??`ݶ f{?Fo?Y????@00uMb ?z-??XI$ &?gf???7Ӵ?u|'K.?oP P???F?.??o??9B<~. ????[????<٭?$?????{1?A??.?bKx?L??????'?u8n5? ??e ,]?H????V??Ww?$?C?e l??|zys??K?i-? q?ݬbk, wnG ??;?? ~ ?e?r͒???~' 1`V⦫?-*[??L?K?'2@????仪??n???2?N? ?ƶ?G???i/U??'E?@?`H???;J?? ????? +J?n#???6ڴ?ĹG???N?G?'?Z!??? ??Wi??NJ?@???A??Z|?[??$q}i?ҷ?QbtTEC$??m??mo?L?D??;?%g??w??ŷ???ovH0??a?5??*??ؒ??l͛?S?iy??r?O7????%L]??%?? ?hk ????>v1?HB??????d\?(e o Ix?>3?6BS%????( ??f$?h?? ???eԎ???H? ??`ݶ f{?Fo?Y????@00uMb ?z-??XI$ &?gf???7Ӵ?u|'K.?oP P???F?.??o??9B<~. ????[????<٭?$?????{1?A??.?bKx?L??????'?u8n5? ??e ,]?H????V??Ww?$?C?e l??|zys??K?i-? q?ݬbk, wnG ??;?? ~ ?e?r͒???~' 1`V⦫?-*[??L?K?'2@????仪??n???2?N? ?ƶ?G???i/U??'E?@?`H???;J?? ????? +J?n#???6ڴ?ĹG???N?G?'?Z!??? ??Wi??NJ?@???A??Z|?[??$q}i?ҷ?QbtTEC$??m??mo?L?D??;?%g??w??ŷ???ovH0??a?5??*??ؒ??l͛?S?iy??r?O7????%L]??%?? ?hk ????>v1?HB??????d\?(e o Ix?>3?6BS%????( ??f$?h?? ???eԎ???H? ??`ݶ f{?Fo?Y????@00uMb ?z-??XI$ &?gf???7Ӵ?u|'K.?oP P???F?.??o??9B<~. ????[????<٭?$?????{1?A??.?bKx?L??????'?u8n5? ??e ,]?H????V??Ww?$?C?e l??|zys??K?i-? q?ݬbk, wnG ??;?? ~ ?e?r͒???~' 1`V⦫?-*[??L?K?'2@????仪??n???2?N? ?ƶ?G???i/U??'E?@?`H???;J?? ????? +J?n#???6ڴ?ĹG???N?G?'?Z!??? ??Wi??NJ?@???A??Z|?[??$q}i?ҷ?QbtTEC$??m??mo?L?D??;?%g??w??ŷ???ovH0??a?5??*??ؒ??l͛?S?iy??r?O7????%L]??%?? ?hk ????>v1?HB??????d\?(e o Ix?>3?6BS%????( ??f$?h?? ???eԎ???H? ??`ݶ f{?Fo?Y????@00uMb ?z-??XI$ &?gf???7Ӵ?u|'K.?oP P???F?.??o??9B<~. ????[????<٭?$?????{1?A??.?bKx?L??????'?u8n5? ??e ,]?H????V??Ww?$?C?e l??|zys??K?i-? q?ݬbk, wnG ??;?? ~ ?e?r͒???~' 1`V⦫?-*[??L?K?'2@????仪??n???2?N? ?ƶ?G???i/U??'E?@?`H???;J?? ????? +J?n#???6ڴ?ĹG???N?G?'?Z!??? ??Wi??NJ?@???A??Z|?[??$q}i?ҷ?QbtTEC$??m??mo?L?D??;?%g??w??ŷ???ovH0??a?5??*??ؒ??l͛?S?iy??r?O7????%L]??%?? ?hk ????>v1?HB??????d\?(e o Ix?>3?6BS%????( ??f$?h?? ???eԎ???H? ??`ݶ f{?Fo?Y????@00uMb ?z-??XI$ &?gf???7Ӵ?u|'K.?oP P???F?.??o??9B<~. ????[????<٭?$?????{1?A??.?bKx?L??????'?u8n5? ??e ,]?H????V??Ww?$?C?e l??|zys??K?i-? q?ݬbk, wnG ??;?? ~ ?e?r͒???~' 1`V⦫?-*[??L?K?'2@????仪??n???2?N? ?ƶ?G???i/U??'E?@?`H???;J?? ????? +J?n#???6ڴ?ĹG???N?G?'?Z!??? ??Wi??NJ?@???A??Z|?[??$q}i?ҷ?QbtTEC$??m??mo?L?D??;?%g??w??ŷ???ovH0??a?5??*??ؒ??l͛?S?iy??r?O7????%L]??%?? ?hk ????>v1?HB??????d\?(e o Ix?>3?6BS%????( ??f$?h?? ???eԎ???H? ??`ݶ f{?Fo?Y????@00uMb ?z-??XI$ &?gf???7Ӵ?u|'K.?oP P???F?.??o??9B<~. ????[????<٭?$?????{1?A??.?bKx?L??????'?u8n5? ??e ,]?H????V??Ww?$?C?e l??|zys??K?i-? q?ݬbk, wnG ??;?? ~ ?e?r͒???~' 1`V⦫?-*[??L?K?'2@????仪??n???2?N? ?ƶ?G???i/U??'E?@?`H???;J?? ????? +J?n#???6ڴ?ĹG???N?G?'?Z!??? ??Wi??NJ?@???A??Z|?[??$q}i?ҷ?QbtTEC??息非应用商店下载前往应用商店下载安装软件，或者更换其他网址下载安装软件，观察是否恢复使用出现频率不高可能是软件运行不稳定引起，建议将系统更新到最新版本使用观察2升级系统版本系统新版本提升了兼容性和稳定性。
点击参加公测活动，阅读华为公测协议隐私声明并同意然后下载描述文件并安装成功若所持机型不适配当前的公测活动，点击“下载描述文件”将提示“描述文件无效，安装终止进入“设置 系统和更新 软件更新”下载安装公测版本，升级体验方法二通过HarmonyOS 内测活动来完成系统升级打开我的华为。
1进入设置更多设置应用程序全部找到该程序点击进入信息界面清除数据试试2尝试重启手机 3尝试升级该应用程序的软件版本或者更换下载资源重新下载安装使用4若手机系统不是最新，将手机升级到最新版本试试，您可以进入设置更多设置系统升级立即检查更新，根据提示下载升级包。
