What to do if firmware update failed

1. Please go to QTS-->Control Panel-->System Settings-->System Logs to check the event log. And you can refer to below table of error code to identify the issues.

Error Code	Description
FW_NOTFOUND=1	Cannot find firmware in update folder
UPDATE_LOCKED=2	System is rebooting or another update is processing
FW_NOFREESPACE=3	No enough space on the system volume to decrypt firmware image
FW_FORMAT_ERROR=4	System update failed. Firmware file format error
FW_DEGRADE_CHECK_ERROR=5	System update failed. Firmware degrade check error
FW_EXTRACT_ERROR=6	System update failed. Extract firmware failed
FW_DEGRADE_STORAGE2_ERROR=7	System update failed. Firmware degrade check IS_STORAGE_V2 error
SYS_HALTING=8	The system is being shut down
SSLLIB_NOTFOUND=9	SSL library is not found
FW_UPDATE_CHECK_ERROR=10	Firmware update check failed
FW_CRC_ERROR=11	Firmware CRC check failed
FW_SIZE_ERROR=12	Check firmware size failed
FW_RFS1_ERROR=13	mount RFS1 failed
FW_RFS1_CRC_ERROR=14	RFS1 CRC failed
FW_RFS2_ERROR=15	mount RFS2 failed
FW_RFS2_CRC_ERROR=16	RFS2 CRC failed
FW_KERNEL_FLASH_ERROR=17	Kernel flash error
W_ROOTFS_FLASH_ERROR=18	RootFS flash error
FW_ROOTFS2_FLASH_ERROR=19	RootFS2 flash error
FW_KERNEL_UPDATE_ERROR=20	Kernel flash update failed
FW_ROOTFS_UPDATE_ERROR=21	RootFS flash update failed
FW_ROOTFS2_UPDATE_ERROR=22	RootFS2 flash update failed
FW_UPDATE_IMG_ERROR=999	Execute update image failed

2. Please try to reboot the NAS and do the firmware update again.

3. If it still failed to update the firmware, you can do the manual firmware update with below link. (go to step 4 if you are not familiar with Linux)

http://wiki.qnap.com/wiki/Manually_Updating_Firmware

4. Contact QNAP support for the assistant.