J5芯片fastboot下载固件失败

在对J5板子进行recovery过程中，使用【地平线升级工具V1.0.5】，在进行uart+fastboot下载过程中，出现了如下错误：

Hobot#

[2022-09-08 13:59:46,661] [Update0] [INFO] transfer_to_board.py:225 can not detect serial number, use serial mode

[2022-09-08 13:59:46,661] [Update0] [INFO] transfer_to_board.py:229 setenv ipaddr 192.168.1.10

[2022-09-08 13:59:46,662] [Update0] [INFO] transfer_to_board.py:232 setenv serverip 192.168.1.100

[2022-09-08 13:59:47,174] [Update0] [INFO] core.py:86 [com] setenv ipaddr 192.168.1.10

[2022-09-08 13:59:47,174] [Update0] [INFO] core.py:86 [com] Hobot# ping 192.168.1.100

[2022-09-08 13:59:47,174] [Update0] [INFO] core.py:86 [com] phy_addr:14

[2022-09-08 13:59:47,174] [Update0] [INFO] core.py:86 [com] ethernet@59120000 Waiting for PHY auto negotiation to complete.

[2022-09-08 13:59:47,685] [Update0] [INFO] core.py:86 [com] .

[2022-09-08 13:59:48,198] [Update0] [INFO] core.py:86 [com] .

[2022-09-08 13:59:48,711] [Update0] [INFO] core.py:86 [com] .

[2022-09-08 13:59:49,225] [Update0] [INFO] core.py:86 [com] .

[2022-09-08 13:59:49,736] [Update0] [INFO] core.py:86 [com] .

[2022-09-08 13:59:50,237] [Update0] [INFO] core.py:86 [com] .

[2022-09-08 13:59:50,738] [Update0] [INFO] core.py:86 [com] .

[2022-09-08 13:59:51,251] [Update0] [INFO] core.py:86 [com] done

[2022-09-08 13:59:51,251] [Update0] [INFO] core.py:86 [com] Phy speed:1000M

[2022-09-08 13:59:51,251] [Update0] [INFO] core.py:86 [com] Phy duplex:1

[2022-09-08 13:59:51,251] [Update0] [INFO] core.py:86 [com] Set Mac Address:16:32:1e:85:d4:dd

[2022-09-08 13:59:51,251] [Update0] [INFO] core.py:86 [com] Using ethernet@59120000 device

[2022-09-08 13:59:56,372] [Update0] [INFO] core.py:86 [com] host 192.168.1.100 is alive

[2022-09-08 13:59:56,372] [Update0] [INFO] core.py:86 [com] Hobot#

[2022-09-08 13:59:56,372] [Update0] [INFO] transfer_to_board.py:250 before fastboot burn test net ping is OK.

[2022-09-08 13:59:56,886] [Update0] [DEBUG] transfer_to_board.py:254 run fastboot_cmd

[2022-09-08 13:59:56,887] [Update0] [INFO] transfer_to_board.py:260 start fastboot burn in j5 uboot...

[2022-09-08 13:59:56,887] [Update0] [INFO] transfer_to_board.py:292 cmd:fastboot -s udp:192.168.1.10:5554 flash gpt E:/hobot/packages\gpt_main-secure.img

[2022-09-08 13:59:56,887] [Update0] [DEBUG] core.py:600 cd tools/adb/windows-j5 && fastboot -s udp:192.168.1.10:5554 flash gpt E:/hobot/packages\gpt_main-secure.img

[2022-09-08 13:59:56,936] [Update0] [DEBUG] utils.py:256 系统找不到指定的路径。

[2022-09-08 13:59:57,445] [Update0] [ERROR] transfer_to_board.py:297 fastboot 烧写分区:gpt 失败，请检查网络是否连通！

经过我们细致排查，从防火墙、网络等角度进行验证，均排除在外，现在怀疑是fastboot本身出现了问题，在此求证解决方法，谢谢！