[求助]update.zip如何通過recovery的簽名驗證？

E:Can’t open/cache/recovery/command 無法打開/緩存/恢復/命令-- Install from sdcard… -從安裝SD卡...Finding update package… 尋找更新包...Opening update package… 打開更新包...Verifying update package… 驗證更新包...E:failed to open /sdcard/update.zip(No such file or directory)未能打開/ SD卡/ update.zip（沒有這樣的文件或目錄）E:signature verification failed 簽名驗證失敗Installation aborted. 安裝中止。