Roborock S8


Roborock S8 picture, click to enlarge

ModelID: roborock.vacuum.a51
OEM: Roborock
Firmware format: enc, signed, header in TZ
Sound format:
SOC: Allwinner MR813 (4x)
RAM: 1 GByte (DDR4)
Flash: 4GByte eMMC
WiFi: RT8189FS
OS: OpenWRT (custom Tina) (4.9.x)
Released: Q1/2023


Camera: y (SC035HGS, OV7251, both front-facing) with IR illumination
Mop: y (vibrating)
Waterpump: y
Towerbumper: y
IR dropsensors: 6x
IR sidesensors: y
Frontsensor: Cameras (+illum),Linelaser
Carpetsensor: y (ultrasonic)
Brush type: dual rubber
Auto Empty: Yes (requires optional base station, not part of default package)
Auto Mop Cleaning: No
Cloud support: 4.3.5, rriot


Root supported? : y (04/2023)
Root method public? : 08/2023
Root complexity: medium (partial disassembly)
Valetudo support: y


Custom Firmwarebuilder (Dustbuilder)
Compatible Basestations: CDZ12RR
Buy on (affiliate link*) price history for (ASIN:B0BR5CGYKY):

Buy on (affiliate link*) price history for (ASIN:B0BVLGDCP3):

Buy on (affiliate link*) price history for (ASIN:B0BVLGDCP3):

Buy on (affiliate link*) price history for (ASIN:B0BVLGDCP3):

Buy on (affiliate link*) price history for (ASIN:B0BVLGDCP3):

Buy on (affiliate link*) price history for (ASIN:B0BVLGDCP3):

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Base station is voltage dependent. Do not use a US 110V base station in a 220V country. Root released at DEFCON 31.


first seen2023-03-092023-03-292023-03-092023-03-09

appb9adb40bf7e2c136cfc9225669cb9337b9adb40bf7e2c136cfc9225669cb9337_upd_roborock.vacuum.a51.bin4.3.5_10382023-02-23 12:49:00105,11 MBsg,us
appb881f3158503ff8fb5f4b17deae86639b881f3158503ff8fb5f4b17deae86639_upd_roborock.vacuum.a51.bin4.3.5_10662023-02-28 11:21:00105,164 MBde,sg,us
appae16feabab2cfddf365bd29539513749ae16feabab2cfddf365bd29539513749_upd_roborock.vacuum.a51.bin4.3.5_10862023-03-03 04:04:00105,164 MBde,ru,sg,us
appb7e5f3723e27d7b3e626e63993f2b159b7e5f3723e27d7b3e626e63993f2b159_upd_roborock.vacuum.a51.bin4.3.5_11982023-03-23 06:13:00105,201 MBde,ru,sg,us
appfab9b9cb57bc7169fb2367d5920319dffab9b9cb57bc7169fb2367d5920319df_upd_roborock.vacuum.a51.bin4.3.5_12122023-03-26 11:56:00104,975 MBde,ru,sg,us
app010c42a3ec1507d5e55297ee755b46ca010c42a3ec1507d5e55297ee755b46ca_upd_roborock.vacuum.a51.bin4.3.5_12862023-04-15 12:06:00104,975 MBde,ru,sg,us
app8210c16c229acc258d113ad8f56ac635ultron_1316_fullos.8210c16c229acc258d113ad8f56ac635.signed.pkg4.3.5_13162023-05-04 16:23:50104,975 MBus


These logs are extracted from official firmware releases. They might or might not contain useful information.

app4.3.5_10382023-02-23 12:49:00Fix some bugs,optimize user experience
app4.3.5_10662023-02-28 11:21:001. Route planning algorithm has been optimized.
2. The obstacle recognition ability has been strengthened.
3. Some known bugs have been fixed, allowing for an improved user experience.
app4.3.5_10862023-03-03 04:04:00Fix some bugs,optimize user experience
app4.3.5_11982023-03-23 06:13:001. Optimized AI recognition ability and improved the success rate of obstacle avoidance.
2. Optimized the strategy for the threshold.
3. Solved the problem of room division failure in some cases.
4. Fixed other known bugs.
app4.3.5_12122023-03-26 11:56:00Fix some bugs,optimize user experience
app4.3.5_12862023-04-15 12:06:001. Improved software stability.
2. Route planning algorithm has been optimized.
3. Fixed other known bugs.
app4.3.5_13162023-05-04 16:23:50

[2] Active: A device is still sold, and receives support by the vendor or the community

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This information is collected over time by my rooted devices and stored in a database. There might be firmware older than this, but it is not listed here as I did not own a particular device at that time. There is no guarantee for accuracy of this information, as the availability of firmware might be device specific and region specific. Sometimes I don't have enough devices to cover all regions.

Note: If you use information from this table, please reference it, eg. "Dennis Giese, Robotinfo,".
Please contact me prior using any of the images.

Last import timestamp: 2023-07-31 07:26:11