LS-5130-52TP-EI 系统启动失败文件丢失

系统无法启动，网络端口不亮，启动时提示如下：

Press Ctrl+B to access EXTENDED BOOT MENU...0
Loading the main image files...
Loading file flash:/s5130ei_e-cmw710-system-r3109p09.bin........................
.....................................Done.
Image file flash:/s5130ei_e-cmw710-system-r3109p09.bin is invalid!
Loading the backup image files...
The image does not exist!
Loading images fails.
Loading the main boot and system image files...
Loading file flash:/s5130ei_e-cmw710-system-r3109p09.bin........................
.....................................Done.
Image file flash:/s5130ei_e-cmw710-system-r3109p09.bin is invalid!
Loading the backup boot and system image files...
The image does not exist!
Loading images fails.
Loading the main boot image...
Loading file flash:/s5130ei_e-cmw710-boot-r3109p09.bin...........Done.
Image file flash:/s5130ei_e-cmw710-boot-r3109p09.bin is self-decompressing......
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............................Done.
System is starting...
<boot>

尝试恢复出厂设置，提示：

Enter your choice(0-8): 5
Password recovery capability is enabled. To perform this operation, first
disable the password recovery capability using the undo password-recovery
enable command in CLI.

   EXTENDED BOOT MENU

1. Download image to flash
2. Select image to boot
3. Display all files in flash
4. Delete file from flash
5. Restore to factory default configuration
6. Enter BootRom upgrade menu
7. Skip current system configuration
8. Set switch startup mode
0. Reboot
Ctrl+Z: Access EXTENDED ASSISTANT MENU
Ctrl+F: Format file system
Ctrl+P: Change authentication for console login
Ctrl+R: Download image to SDRAM and run
Ctrl+Y: Change Work Mode
Ctrl+C: Display Copyright