WhiskerOS™ Releases

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This update brings enhancements to the Litter-Robot 5 and EVO experiences, including additional notifications. We've also made general improvements and fixed a few bugs to keep things running smoothly.

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You can now view insights graphs in your local time instead of UTC, making it easier to understand at a glance. This update also adds language support for more countries, along with bug fixes and general improvements.

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Here's what's new!

This update brings enhancements to the Litter-Robot 5 and EVO experiences, including additional notifications and a new cycles graph. We've also made general improvements and fixed a few bugs to keep things running smoothly.

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Here's what's new!

Introducing the new Litter-Robot 5, Litter-Robot 5 Pro, and Litter-Robot EVO, bringing enhanced performance and smarter pet insights. This release also includes general bug fixes and stability across all robot models.

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Small fixes and improvements to keep things running smoothly for you and your pets.

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Easier account management, security improvements, and expanded Whisker+ insights features including historical trends, new graphs, and daily recaps.

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Improved device management, offline notifications, helpful resource access, and performance fixes.

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You can now reassign or unassign weight entries, capture richer pet profile details, and see updated app typography and personalized greetings.

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Pet zodiac symbols, quicker access to support from home, and general bug fixes and improvements.

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New in-app birthday experience, cleaner download history UI, and easier logo-to-home navigation.

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Memorialize a pet in-app, personalize profiles further, and quickly copy serial numbers.

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The new Insights tab gives a quick snapshot of weight, visit count, and other trends.

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New home screen experience and broader in-app message/push notification language support.

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Bug fixes and performance improvements.

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Version ending in 1.18.0 — 14 November 2024

Bug fixes and performance improvements.

Version ending in 1.17.0 — 30 September 2024

SmartScale improvements and ability to reset Litter-Robot 4 from the app.

Version ending in 1.16.0 — 29 August 2024

Deep cleaning reminders, improved activity ordering, faster graph loads, new litter level statuses, and multi-language video captions.

Version ending in 1.14.0 — 31 July 2024

New Feeder-Robot images, optimized notification messaging, and pet health status enhancements.

Version ending in 1.13.0 — 27 June 2024

Shop without login, upgraded message center and notifications, added feeder troubleshooting support, and litter type settings.

Version ending in 1.12.1 — 29 May 2024

Added litter type setting, reorganized account tab, in-app warranty information, and continued SmartScale/usability improvements.

Version ending in 1.11.0 — 29 April 2024

Refer-a-friend launch, SmartScale algorithm improvements, and firmware update release notifications.

Version ending in 1.10.0 — 2 April 2024

Simplified shopping/account management, daily visit tracking, SmartScale improvements, and expanded Scoops Saved support.

Version ending in 1.9.0 — 28 February 2024

Added Scoops Saved counter, SmartScale enhancements, improved support flows, and general performance updates.

Version ending in 1.8.2 — 31 January 2024

Message center additions, new Korean/Thai language support, broader phone support, and bug/performance fixes.

Version ending in 1.8.0 — 30 November 2023

Launch of Whisker Message Center, automatic firmware updates for LR4, onboarding support improvements, and app stability enhancements.

Version ending in 1.7.0 — 26 October 2023

Login whitespace fix, SmartScale improvements, crash fixes, and performance updates.

Version ending in 1.6.1 — 1 September 2023

New authenticator functionality, improved QR code scanner, localization updates, and security/performance enhancements.

Version ending in 1.6.0 — 7 August 2023

Introduced SmartScale weight-based ID rollout, cat profiles for LR4, translation improvements, and faster QR scanning.

Version ending in 1.5.0 — 27 June 2023

Added email autofill support and fixed notification/performance issues.

Version ending in 1.4.3 — 30 May 2023

Minor bug fixes and performance improvements.

Version ending in 1.4.1 — 18 April 2023

Introduced Pets with per-pet insights, level tracking, real-time stats, and activity monitoring.

Version ending in 1.3.9 — 16 March 2023

Updated controls/history and feeder scheduling screens, new onboarding warnings, loading screens, and UTC conversion fixes.

Version ending in 1.3.8 — 15 March 2023

Updated controls/history and feeder scheduling, onboarding warnings, loading screens, and UTC conversion fixes.

Version ending in 1.3.7 — 13 March 2023

Updated controls/settings and feeder scheduling screens plus bug fixes.

Version ending in 1.3.6 — 9 February 2023

Smart notifications, zoom adjustments, history corrections, EU font fix, and UI updates.

Version ending in 1.3.5 — 19 December 2022

Scientific notation display fix and language fallback fixes.

Version ending in 1.3.4 — 14 December 2022

LR4 smart notifications and panel brightness, plus updates to LR3 reset gauge and feeder onboarding MAC display.

Version ending in 1.3.3 — 3 December 2022

LR4 bluetooth onboarding fix.

Version ending in 1.3.2 — 2 December 2022

LR4 bluetooth onboarding fix and New User Interface updates from 1.3.1.

Version ending in 1.3.1 — 29 November 2022

New robot visuals, control panels, illustrations, and popup UX plus bug/performance fixes.

Version ending in 1.2.5 — 21 October 2022

Minor bug fix update plus LR4 Cat Detect and feeder history display updates.

Version ending in 1.2.4 — 7 October 2022

LR4 globe nightlight brightness setting and new waste drawer/laser notifications.

Version ending in 1.2.3 — 13 October 2022

Pre-2018 LR3C fixes and feeder bug fixes.

Version ending in 1.2.2 — 21 June 2022

Feeder history fixes, LR3 text improvements, and LR4 clump delay save behavior fixes.

Version ending in 1.2.1 — 17 June 2022

A fresh new app experience with Litter-Robot 4 support, robot reordering, pull-to-refresh, and bug fixes.

Version ending in 1.1.1 — 31 January 2022

Updated UI and Whisker rebrand rollout (formerly AutoPets Connect) with a modernized interface.

Robot Firmware Version 5.9.6

• Improved scooping performance: The globe now rotates farther past the dump position to help move clumps more effectively into the waste drawer.

• New “Weight added” screen and SmartScale guidance: A new “Weight added” screen will appear whenever weight is detected on the unit and will remain visible while weight is applied. If the added weight is not from a cat (such as when adding litter), press the Cancel button to zero the SmartScale. Press Cancel any time the unit’s weight or placement changes, including after emptying the waste drawer, adding or removing litter, cleaning, or moving the unit. Do not lean on or rest against the unit while pressing Cancel, as this may affect calibration accuracy.

• Updated startup and shutdown screens: Replaced the “Hello” startup message and “Goodbye” shutdown message with a centered Whisker logo.

• Improved clean cycle countdown: Updated the Cycle Delay countdown display to show both minutes and seconds (min sec) instead of only minutes. The countdown behavior has not changed and still begins immediately after the cat exits the Litter-Robot.

• Language and unit customization: Press and hold the Cycle and Connect buttons for 3 seconds to customize the language and unit of measure displayed on the Litter-Robot LCD screen. Currently available languages include English and French.

• Bug fixes

Connectivity (Whisker Edge) Version 1.5.34

• Bug fixes

Robot Firmware Version 5.9.1

• WasteID™ improvements

• Bug fixes related to error reporting (Scale taring and motor fault)

Connectivity (Whisker Edge) Version 1.5.31

• Bug fixes

Camera Firmware Version 1.2.2-1233.2

• Bug fixes

Connectivity (Whisker Edge) Version 1.5.26

• Bug fixes

Robot Firmware Version 5.8.4

• Bug fixes related to error reporting (Scale taring and motor fault)

Connectivity (Whisker Edge) Version 1.5.24

• Bug fixes

Robot Firmware Version 5.7.5

• Bug fixes related to waste weights

Connectivity (Whisker Edge) Version 1.5.22

• Bug fixes related to connectivity errors and "WiFi Chip Fault"

Camera Firmware Version 1.2.2-1233

• Bug fixes

AI Firmware Version 0.0.43

• Bug fixes

Connectivity (Whisker Edge) Version 1.5.20

• Bug fixes

Robot Firmware Version 5.7.4

• The latest update introduces WasteID™, a new capability that helps your Litter-Robot distinguish between #1 (urine) and #2 (feces) for more targeted odor control and advanced routine monitoring. This firmware update will begin rolling out on December 2nd. Afterward, WasteID™ data will appear in the Whisker app in stages, so availability may vary by user. WasteID™ is still learning; its accuracy may vary, but it will continue to improve as more data is collected.

Connectivity (Whisker Edge) Version 1.5.16

• Bug fixes

Robot Firmware Version 5.6.4

• Short visit handling improvements

Connectivity (Whisker Edge) Version 1.5.15

• Bug fixes

Camera Firmware Version 1.2.2-1231

• Bug fixes

AI Firmware Version 0.0.41

• Bug fixes

Robot Firmware Version 5.9.6

• Improved scooping performance: The globe now rotates farther past the dump position to help move clumps more effectively into the waste drawer.

• New “Weight added” screen and SmartScale guidance: A new “Weight added” screen will appear whenever weight is detected on the unit and will remain visible while weight is applied. If the added weight is not from a cat (such as when adding litter), press the Cancel button to zero the SmartScale. Press Cancel any time the unit’s weight or placement changes, including after emptying the waste drawer, adding or removing litter, cleaning, or moving the unit. Do not lean on or rest against the unit while pressing Cancel, as this may affect calibration accuracy.

• Updated startup and shutdown screens: Replaced the “Hello” startup message and “Goodbye” shutdown message with a centered Whisker logo.

• Improved clean cycle countdown: Updated the Cycle Delay countdown display to show both minutes and seconds (min sec) instead of only minutes. The countdown behavior has not changed and still begins immediately after the cat exits the Litter-Robot.

• Language and unit customization: Press and hold the Cycle and Connect buttons for 3 seconds to customize the language and unit of measure displayed on the Litter-Robot LCD screen. Currently available languages include English and French.

• Bug fixes

Robot Firmware Version 5.9.1

• WasteID™ improvements

• Bug fixes

Connectivity (ESP Firmware) Version 2.5.11

• Bug fixes

Robot Firmware Version 5.8.4

• Bug fixes related to error reporting (Scale taring and motor fault)

Connectivity (ESP Firmware) Version 2.5.9

• Bug fixes

Robot Firmware Version 5.7.5

• Bug fixes related to waste weights

Connectivity (ESP Firmware) Version 2.5.8

• Bug fixes

Robot Firmware Version 5.7.4

• The latest update introduces WasteID™, a new capability that helps your Litter-Robot distinguish between #1 (urine) and #2 (feces) for more targeted odor control and advanced routine monitoring. This firmware update will begin rolling out on December 2nd. Afterward, WasteID™ data will appear in the Whisker app in stages, so availability may vary by user. WasteID™ is still learning; its accuracy may vary, but it will continue to improve as more data is collected.

Connectivity (ESP Firmware) Version 2.5.6

• Bug fixes

Robot Firmware Version 5.6.4

• Short visit handling improvements

Connectivity (ESP Firmware) Version 2.5.4

• Bug fixes and improved error handling

• Fixed a bug that could result in unnecessary LitterHopper dispenses.

• There are no changes to robot features or performance in this release. Devices running firmware version 137.0000.438 do not require an update.

• Bug fixes

• There are no changes to robot features or performance in this release. Devices running firmware version 1175.5021.293 do not require an update.

• Visit Duration Time for additional robot data

• Perfect Cycle (8 mins) selection through the control panel for Purina Tidy Cats Designed for Litter-Robot

Robot Firmware Version 1175.5021.292 — 8 July 2024

• Support for the LitterHopper accessory.

• Robot no longer automatically cycles on power-up.

• Adjusted the scale thresholds for improved cat detection.

• Reduced the occurrence of 'Excess Weight Detected' fault (blue with partial yellow flashing light).

• Scale tare frequency increased to account for when the drawer is emptied and the reset button isn't pressed.

• Ability for customers to calibrate optimal litter level.

Robot Firmware Version 1175.5021.290 — 3 April 2024

• Small bug fixes and enhancements.

Robot Firmware Version 1175.5021.289 — 28 February 2024

• SmartScale® accuracy improvements.

Robot Firmware Version 1175.5021.288 (limited release) — 16 January 2024

Note: This update includes FW PIC 2.87 & ESP 1.1.73

• Introduces an exciting update that will improve the sensing of when your waste drawer is full. This is expected to improve the accuracy of drawer level measurements and increase the amount of waste you can accumulate in your drawer. In order to enable this new algorithm, you will need to take a few minutes to recalibrate your Litter-Robot 4; this shouldn't take more than 5 minutes of your time. Instructions for recalibration are here.

• Enhanced detection.

• SmartScale accuracy improvements.

• Improved WiFi connectivity.

• Changed robot firmware numbering system to consolidate Connectivity FW, Cat Sensor FW, and Main Robot Control FW into one release.

Robot Firmware Version 1173.5011.287 (limited release) — 5 December 2023

Note: This update includes FW PIC 2.87 & ESP 1.1.73

• Introduces an exciting update that will improve the sensing of when your waste drawer is full. This is expected to improve the accuracy of drawer level measurements and increase the amount of waste you can accumulate in your drawer. In order to enable this new algorithm, you will need to take a few minutes to recalibrate your Litter-Robot 4; this shouldn't take more than 5 minutes of your time. Instructions for recalibration are here.

• Enhanced detection.

• SmartScale accuracy improvements.

• Improved WiFi connectivity.

• Changed robot firmware numbering system to consolidate Connectivity FW, Cat Sensor FW, and Main Robot Control FW into one release.

Main Robot Control (PIC Firmware) Version ending in 2.86 — 5 October 2023

• Introduces an exciting update that will improve the sensing of when your waste drawer is full. This is expected to improve the accuracy of drawer level measurements and increase the amount of waste you can accumulate in your drawer. In order to enable this new algorithm, you will need to take a few minutes to recalibrate your Litter-Robot 4; this shouldn't take more than 5 minutes of your time. Instructions for recalibration are here.

• This firmware version was a limited release to only a subset of customers.

Main Robot Control (PIC Firmware) Version ending in 2.85 — 26 July 2023

• Provides the necessary updates to the Litter-Robot 4 to support the upcoming SmartScale feature. The SmartScale feature should be available to all Litter-Robot 4 users by mid-August.

Main Robot Control (PIC Firmware) Version ending in 2.84 — 13 June 2023

• Improved the immunity of cat detection to cat hair and dust.

• Enhanced logic to eliminate instances where the globe cycle is interrupted.

• Added logic for automatic recovery of cycle interruptions.

• This image shows what your Litter-Robot 4 looked like before the 2.84 firmware update and after.

Cat Sensor (TOF Firmware) Version 5.1.1 — 2 February 2023

• Enables in unit calibration of cat sensors.

• Introduces a new indicator that lets you know when your drawer is full (Make sure your Operational Software is up to date for this to work).

Connectivity (ESP Firmware) Version 1.1.66 — 14 February 2023

• Fixes issue where updates were not going through.

Main Robot Control (PIC Firmware) Version ending in 2.82 — 27 January 2023

• Waste drawer level reporting has been improved.

• Added the ability for customers to recalibrate their lasers if their waste drawer indicator isn't working properly.

Connectivity (ESP Firmware) Version 1.1.65 — 16 January 2023

• Fixes issue where updates were not going through.

Main Robot Control (PIC Firmware) Version ending in 2.81 — 06 January 2023

• Improves the reaction time of robots after a cycle is interrupted.

Cat Sensor (TOF Firmware) Version 4.2.5 — 6 May 2022

• Improvements to Wi-Fi updates (Make sure your Connectivity Software is up to date for this to work).

Robot Firmware Version 4.5.2

• There are no changes to robot features or performance in this release. Devices running Robot Firmware Version 4.5.1 do not require an update.

Robot Firmware Version 4.5.1

• Automatic waste level reset: When the Litter-Robot detects that the waste drawer has been emptied, the waste level gauge will automatically reset in both the Whisker app and on the Litter-Robot LCD screen. If the waste level does not automatically reset, you can manually reset it at any time using the Reset Waste button in the Controls tab of the Whisker app.

• New “Weight Added” screen and SmartScale guidance: A new “Weight Added” screen will appear whenever weight is detected on the unit and will remain visible while weight is applied. If the added weight is not from a cat (such as when adding litter), press the Cancel button to zero the SmartScale. Press Cancel any time the unit’s weight or placement changes, including after emptying the waste drawer, adding or removing litter, cleaning, or moving the unit. Do not lean on or rest against the unit while pressing Cancel, as this may affect calibration accuracy.

• Updated Visit Summary screen: The “Visit Summary” sequence shown after your cat exits the Litter-Robot has been updated for improved readability and now includes visit duration reporting, showing how long your cat was inside the Litter-Robot.

• Language and unit customization: Press and hold the Cycle and Connect buttons for 3 seconds to customize the language and unit of measure displayed on the Litter-Robot LCD screen. Currently available languages include English and French.

• Bug fixes

Robot Firmware Version 4.3.0

• Waste level is now represented using five simplified levels instead of a percentage on the robot LCD

Connectivity (ESP Firmware) Version 2.5.11

• Bug fixes

Robot Firmware Version 4.2.0

• Improved accuracy of waste drawer level reporting

• Bug fixes

Connectivity (ESP Firmware) Version 2.5.8

• Bug fixes

Connectivity (ESP Firmware) Version 2.5.7

• SmartScale® and weight-based cat identification will be available for free in the Whisker App for all Litter-Robot EVO users. This feature uses weight-sensor technology to track individual cats and provide insights into their routine over time.

• Bug fixes related to the "Reset Waste" button within the Controls tab in the Whisker app.

Robot Firmware Version 4.1.1

• Bug fixes and improved error handling

Connectivity (ESP Firmware) Version 2.5.4

• Bug fixes and improved error handling