These scripts allow you to modify the Xiaomi R1800 firmware image to make sure SSH and UART access is always enabled.
The default root password is password
. Please remember to login to the router and change that after the upgrade. Your router settings like IP address and SSIDs are stored in the nvram and should stay the same.
โ The script also tries its best to remove or disable phone-home binaries, and also the smart controller (AIoT) parts, leaving you with a (close to) OpenWRT router that you can configure via UCI or /etc/config
.
Between preserving stock functionality and privacy concerns, I would err on the side of caution and rather that some functionality be sacrificed for a router that I have more confidence to connect to the Internet.
Note that in order to get SSH access to the router initially, you need to downgrade to version 1.0.17 and exploit it first. Once you have SSH, you can use this repacking method to maintain SSH access for newer versions.
You need a brain ๐
-
Download the firmware(s) from miwifi.com. It should be something like
miwifi_r1800_firmware_xxx_yyy.bin
. Put it/them toorig-firmwares
directory. -
Run
make
to build archives of patched firmwares. Parallel build not supported! This will build patched images with following naming convention:<firmware_image_name>+SSH.zip
: patched with originalrepack-squashfs.sh
script, which enables SSH and does its best to disable Xiaomi functions/bloatware<firmware_image_name>+SSH+MI.zip
: enables SSH, but leaves Xiaomi functions intact, only ota predownload is disabled<firmware_image_name>+SSH+opt.zip
,<firmware_image_name>+SSH+MI+opt.zip
: same as the respective two above, with additionally/opt
directory created
-
After extracting a generated archive of your liking, you will get
r3600-raw-img.bin
file. Flash this file directly into the router using SSH. You cannot use the web UI because this is a raw image, and more importantly has no signature.If you are using a recently xqrepack'ed firmware, you can use the
xqflash
utility on the router to flash an update image:xqflash /tmp/r3600-raw-img.bin
After it completes successfully, you should be able to
reboot
.If the
xqflash
utility is not available, you can manually flash the update image described in the following section.
The R3600 firmware uses an A/B partition system, called rootfs
and rootfs_1
. This corresponds to mtd12
and mtd13
. Find the partition that is not the one in use and use ubiformat
to write the raw image onto the partition:
ubiformat /dev/mtd12 -f /tmp/r3600-raw-img.bin -s 2048 -O 2048
Set the nvram variable to re-initialize /etc
(and I think to switch partitions also):
nvram set flag_ota_reboot=1
nvram commit
reboot
You can check the MTD partitions from /proc/mtd
:
root@XiaoQiang:~# grep rootfs /proc/mtd
mtd12: 023c0000 00020000 "rootfs"
mtd13: 023c0000 00020000 "rootfs_1"
mtd17: 015cc000 0001f000 "ubi_rootfs"
root@XiaoQiang:~# nvram get flag_boot_rootfs
1
The flag_boot_rootfs
nvram variable indicates which partition is booted, 0
or 1
.
You should pick the partition that is not in use, otherwise ubiformat
will complain:
ubiformat: error!: please, first detach mtd13 (/dev/mtd13) from ubi0
xqrepack is licensed under the 3-clause ("modified") BSD License.
Copyright (C) 2020-2021 Darell Tan, 2021 Alex Potapenko
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