Qihoo_360T7 救砖记录

在更换第三方固件情况下，又刷错了uboot，彻底进入了启动死循环。

串口提示信息：

U-Boot 2023.07.02-OpenWrt-r24106-10cc5fcd00 (Sep 23 2024 - 12:34:46 +0000)CPU:   MediaTek MT7981
Model: Qihoo 360T7
DRAM:  256 MiB
Core:  41 devices, 18 uclasses, devicetree: embed
Loading Environment from UBI... spi-nand: spi_nand spi_nand@0: unknown raw ID ef ae 21 00
Partition ubi not found!** Cannot find mtd partition "ubi"
In:    serial@11002000
Out:   serial@11002000
Err:   serial@11002000
reset button found
Loading Environment from UBI... spi-nand: spi_nand spi_nand@0: unknown raw ID ef ae 21 00
Partition ubi not found!** Cannot find mtd partition "ubi"
Net:
Warning: ethernet@15100000 (eth0) using random MAC address - 96:19:db:b3:26:6d
eth0: ethernet@15100000
No EFI system partition
No EFI system partition
Failed to persist EFI variables
Error, no UBI device selected!
Error, no UBI device selected!
spi-nand: spi_nand spi_nand@0: unknown raw ID ef ae 21 00
MTD device ubi not found, ret -19
resetting ...F0: 102B 0000
FA: 1040 0000
FA: 1040 0000 [0200]
F9: 0000 0000
V0: 0000 0000 [0001]
00: 0000 0000
BP: 2400 0041 [0000]
G0: 1190 0000
EC: 0000 0000 [1000]
T0: 0000 0236 [010F]
Jump to BLNOTICE:  BL2: v2.9(release):OpenWrt v2023-07-24-00ac6db3-2 (mt7981-spim-nand-ddr3)
NOTICE:  BL2: Built : 12:34:46, Sep 23 2024
NOTICE:  WDT: [40000000] Software reset (reboot)
NOTICE:  EMI: Using DDR3 settings
NOTICE:  EMI: Detected DRAM size: 256MB
NOTICE:  EMI: complex R/W mem test passed
NOTICE:  CPU: MT7981 (1300MHz)
NOTICE:  SPI_NAND parses attributes from parameter page.
NOTICE:  SPI_NAND Detected ID 0xef
NOTICE:  Page size 2048, Block size 131072, size 134217728
NOTICE:  BL2: Booting BL31
NOTICE:  BL31: v2.9(release):OpenWrt v2023-07-24-00ac6db3-2 (mt7981-spim-nand-ddr3)
NOTICE:  BL31: Built : 12:34:46, Sep 23 2024

　　

操作步骤：

借助mtk底层写入工具，应对uboot故障。

准备启动引导镜像、可用的uboot，进行刷写（windows平台）：

mtk_uartboot.exe -p mt7981-bl2-ram-ddr3-1866mhz-bga.bin --aarch64 -f mt7981_360t7-fip-fixed-parts.bin

　　

刷写完成后，网卡设置为192.168.1.2，然后打开192.168.1.1进入uboot页，写入固件比如immortal

等待重启进入路由系统，然后就是再次升级目标版本。记得使用ubootmod版本。

 

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