M8 刷回原廠4.4.4 recovery 作官方OTA升級

手機成功進入 Bootloader 後，按任一鍵繼續.....
erasing "cache"...
OKAY [  0.088s]
finished. total time: 0.088s
sending "recovery" (14556 KB)...
OKAY [  2.394s]
writing "recovery"...
OKAY [  0.589s]
finished. total time: 2.984s
rebooting...

finished. total time: 0.010s
看到手機重新開機完成後，請按任一鍵繼續.....
< waiting for device >
為甚麼還是沒辦法更新，還出現三角形