第二步：下载并允许未知来源 点击下载按钮后，设备可能会提示你允许安装“未知来源的应用”。在“设置”中打开“来自未知来源”的选项。You'll be able to generally Verify if checksum of the copyright you downloaded corresponds to any Formal Telegram X Develop by means of @tgx_bot.Telegram X also