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**SoC**: MediaTek MT7981B 2x A53 **Flash**: ESMT F50L1G41LB 128MB **RAM**: NT52B128M16JR-FL 256MB **Ethernet**: 4x 10/100/1000 Mbps **Switch**: MediaTek MT7531AE **WiFi**: MediaTek MT7976C **Buttons**: Reset, Mesh **Power**: DC 12V 1A 1. Get ssh access. Supported stock firmware **1.0.47** ``` curl -X POST "http://192.168.31.1/cgi-bin/luci/;stok=*******/api/misystem/arn_switch" -d "open=1&model=1&level=%0Anvram%20set%20ssh_en%3D1%0A" curl -X POST "http://192.168.31.1/cgi-bin/luci/;stok=*******/api/misystem/arn_switch" -d "open=1&model=1&level=%0Anvram%20commit%0A" curl -X POST "http://192.168.31.1/cgi-bin/luci/;stok=*******/api/misystem/arn_switch" -d "open=1&model=1&level=%0Ased%20-i%20's%2Fchannel%3D.*%2Fchannel%3D%22debug%22%2Fg'%20%2Fetc%2Finit.d%2Fdropbear%0A" curl -X POST "http://192.168.31.1/cgi-bin/luci/;stok=*******/api/misystem/arn_switch" -d "open=1&model=1&level=%0A%2Fetc%2Finit.d%2Fdropbear%20start%0A" curl -X POST "http://192.168.31.1/cgi-bin/luci/;stok=********/api/misystem/arn_switch" -d "open=1&model=1&level=%0Apasswd%20-d%20root%0A ``` 2. Backup stock partitions ``` nanddump -f /tmp/BL2.bin /dev/mtd1 nanddump -f /tmp/Nvram.bin /dev/mtd2 nanddump -f /tmp/Bdata.bin /dev/mtd3 nanddump -f /tmp/Factory.bin /dev/mtd4 nanddump -f /tmp/FIP.bin /dev/mtd5 nanddump -f /tmp/ubi.bin /dev/mtd8 nanddump -f /tmp/KF.bin /dev/mtd12 ``` Then transfer them to your computer in a safe place. 3. Get firmware information `cat /proc/cmdline` 4. Copy openwrt-mediatek-filogic-xiaomi_mi-router-ax3000t-initramfs-factory.ubi to **/tmp** and flash If **firmware=0** ``` ubiformat /dev/mtd9 -y -f /tmp/openwrt-mediatek-filogic-xiaomi_mi-router-ax3000t-initramfs-factory.ubi nvram set boot_wait=on nvram set uart_en=1 nvram set flag_boot_rootfs=1 nvram set flag_last_success=1 nvram set flag_boot_success=1 nvram set flag_try_sys1_failed=0 nvram set flag_try_sys2_failed=0 nvram commit reboot ``` If **firmware=1** ``` ubiformat /dev/mtd8 -y -f /tmp/openwrt-mediatek-filogic-xiaomi_mi-router-ax3000t-initramfs-factory.ubi nvram set boot_wait=on nvram set uart_en=1 nvram set flag_boot_rootfs=0 nvram set flag_last_success=0 nvram set flag_boot_success=1 nvram set flag_try_sys1_failed=0 nvram set flag_try_sys2_failed=0 nvram commit reboot ``` Then reboot your router, it should boot to the OpenWrt initramfs system now. 5. Flash openwrt-mediatek-filogic-xiaomi_mi-router-ax3000t-squashfs-sysupgrade.bin `sysupgrade -n /tmp/openwrt-mediatek-filogic-xiaomi_mi-router-ax3000t-squashfs-sysupgrade.bin` 1. Flash openwrt-mediatek-filogic-xiaomi_mi-router-ax3000t-ubootmod-initramfs-recovery.itb `ubiformat /dev/mtd8 -y -f /tmp/openwrt-mediatek-filogic-xiaomi_mi-router-ax3000t-ubootmod-initramfs-recovery.itb` `reboot` 2. Install kmod-mtd-rw `opkg update && opkg install kmod-mtd-rw` `insmod /lib/modules/$(uname -r)/mtd-rw.ko i_want_a_brick=1` 3. Format ubi and create new ubootenv volume ``` ubidetach -p /dev/mtd8; ubiformat /dev/mtd8 -y; ubiattach -p /dev/mtd8 ubimkvol /dev/ubi0 -n 0 -N ubootenv -s 128KiB ubimkvol /dev/ubi0 -n 1 -N ubootenv2 -s 128KiB ``` 4. *(Optional **-10Mb** free space) Add recovery boot feature.* ``` ubimkvol /dev/ubi0 -n 2 -N recovery -s 10MiB ubiupdatevol /dev/ubi0_2 /tmp/openwrt-mediatek-filogic-xiaomi_mi-router-ax3000t-ubootmod-initramfs-recovery.itb ``` 5. Flash Openwrt U-Boot ``` mtd write /tmp/openwrt-mediatek-filogic-xiaomi_mi-router-ax3000t-ubootmod-preloader.bin BL2 mtd write /tmp/openwrt-mediatek-filogic-xiaomi_mi-router-ax3000t-ubootmod-bl31-uboot.fip FIP ``` 6. Flash openwrt-mediatek-filogic-xiaomi_mi-router-ax3000t-ubootmod-squashfs-sysupgrade.itb `sysupgrade -n /tmp/openwrt-mediatek-filogic-xiaomi_mi-router-ax3000t-ubootmod-squashfs-sysupgrade.itb` 1. Force flash openwrt-mediatek-filogic-xiaomi_mi-router-ax3000t-ubootmod-initramfs-recovery.itb `sysupgrade -F -n /tmp/openwrt-mediatek-filogic-xiaomi_mi-router-ax3000t-ubootmod-initramfs-recovery.itb` 2. Format ubi and Nvram ``` ubidetach -p /dev/mtd8; ubiformat /dev/mtd8 -y; ubiattach -p /dev/mtd8 mtd erase Nvram ``` 3. Install kmod-mtd-rw `opkg update && opkg install kmod-mtd-rw` `insmod /lib/modules/$(uname -r)/mtd-rw.ko i_want_a_brick=1` 4. Flash stock images from backup ``` mtd write /tmp/BL2.bin BL2 mtd write /tmp/FIP.bin FIP mtd write /tmp/ubi.bin ubi ``` Then reboot your router, waiting it finished rollback in minutes. `ubiformat /dev/mtd7 -y -f /tmp/ubi.bin` Then reboot your router, waiting it finished rollback in minutes. Signed-off-by: Dim Fish <dimfish@gmail.com> |
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