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BlinkUp SDK Downloads

Electric Imp’s BlinkUp technology provides a convenient, quick and easy way to configure an imp-enabled device to access the Internet via a WiFi network. Supporting BlinkUp in your apps ensures your users can not only to operate your device using only their mobile phone or tablet, but also set up and connect the product out of the box within seconds.

The BlinkUp Software Development Kits (SDKs) provides equally handy and straightforward tools to help you integrate BlinkUp into iOS and Android apps. There are separate SDKs for each of these operating systems.

Electric Imp also offers a BlinkUp implementation based on JavaScript with which to develop BlinkUp-compatible web apps. This is currently in Beta release and as such is not yet formally supported. It is provided solely for customer evaluation and testing.

The Android and iOS BlinkUp SDKs, and the JavaScript BlinkUp Library Beta, may only be incorporated into mobile apps developed by or for Electric Imp customers. You will require a BlinkUp API Key to authorize every access your app makes to the Electric Imp impCloud™ via the SDK or Library. Please contact to discuss the advantages of becoming an Electric Imp customer.

Latest Versions

Click links to download.

Release Notes

Android SDK Release Notes

  • 6.3.5
    • If during a device enrollment poll, the SDK times out while attempting to connect to the server, this is now treated as an error (ie. any registered onError handler will be called). If the SDK times out after contacting the server (ie. the target imp-enabled device did not come online and attempt to enroll, or the enroll was rejected by the server), that is treated as a timeout (ie. any registered onTimeout handler will be called).
    • Minor bug fix.
  • 6.3.4
    • Add option to perform BlinkUp in a small window (for phones with LCDs adversely affected by flashing).
    • Fixed in an issue in which a plan ID was requested even when an existing one was passed in.
  • 6.3.3
    • Certificate pinning update.
  • 6.3.2
    • Fixed an issue in which an app-supplied plan ID was being ignored by the SDK.
  • 6.3.1
    • SDK 6.3.1 should not be used — please update to the latest version immediately.
    • Proguard rules are bundled with the SDK, so there is no need to modify your file (see 6.3.0, Proguard, below).
    • Certificate pinning update.
  • 6.3.0
    • SDK 6.3.0 should not be used — please update to the latest version immediately.
    • Add certificate pinning.
  • 6.2.0
    • SDK 6.2.0 should not be used — please update to the latest version immediately.
    • Minimum Android SDK is now 19.
    • Moved BlinkUp activities declaration into the SDK.

Please see the documentation included with the SDK for earlier release notes.

iOS SDK Release Notes

  • 19.8.2
    • Private cloud and pinning can now be set via the SDK without needing a feature code.
      • Add BUSDK class for SDK usage (eg. Private Cloud API endpoint, pinning set-up)
      • BUSDK.configure() should now be called in the Application Delegate
  • 19.8.1
    • Fix rare rare crashes (array out of bounds).
  • 19.8.0
    • IMPORTANT 19.8.0 is a required updated. Older versions will not be able to connect to the impCloud.
    • Add certificate pinning.
    • Improved the reliability of BlinkUp.
    • Fix connection failures would occur when root certificates where manually trusted.
  • 19.7.0
    • SDK 19.7.0 should not be used — please update to the latest version immediately.
    • Improved the reliability of BlinkUp on iOS 10 and iOS 11 (prevent short BlinkUp events).
    • Examples programs updated to XCode 9 and Swift 4.

Please see the documentation included with the SDK for earlier release notes.

JavaScript Library Beta Release Notes

  • 0.3.3
    • Fix polling progress graphic (missing after main website update).
  • 0.3.2
    • Updated graphics for the examples.
    • Made the SSID optional when creating NetworkConfig objects to allow for non-WiFi BlinkUp.
  • 0.3.1
    • Bug: When username or password are undefined for proxy, BlinkUp will fail.
    • Bug: When dns2 is undefined for static addressing, BlinkUp will fail.
  • 0.2.0
    • Add option to change number of bits per flash.
    • Add option to allow non-embedded clock.
    • Extra memory optimization of during flash to prevent GC.
    • Conversion to module format.
    • Proper IE and Edge detection.
    • Rename NetworkStatic to StaticAddressing.
    • Change NetworkConfig.staticNetwork to NetworkConfig.addressing.
    • Change BUNetworkConfig to BU.NetworkConfig.
    • Change BUNetworkProxy to BU.NetworkProxy.
    • Change BUNetworkStatic to BU.StaticAddressing.
    • Inclusion of "BlinkUp™ powered by electric imp" image.
  • 0.1.5
    • Use raw RAF where possible.
    • Chrome uses canvas opacity rather than drawing.
    • Chrome sets parent element background to white if needed.
    • If iOS is less than 8, use 30 fps.
    • If iOS and device lacks a retina screen, use 30 fps.
    • Attempt to force GPU rendering via transform.
  • 0.1.4
    • Mobile flashes at 60fps.
    • Fix bug where poller would continue polling after lightbox close.
    • Added developer token device information retrieval.
    • Added new BU flag preventFastFlashing to force mobile to slower fps.
    • Added new BU callback progressCallback to allow for custom progress animations.
    • Change default flash progress update to scale a div on desktop, none for mobile.
    • Disable touch move events during countdown until flash complete.

Android SDK Known Issues

6.3.1 and Earlier

SDK 6.3.1 or earlier should not be used — please update to the latest version immediately.

iOS SDK Known Issues


We have identified some compatibility issues with iOS 6 with 19.8.1 and earlier. With the release of iOS 12, this is now unlikely to be fixed, and future versions of the SDK will formally drop iOS 6 support.


There is a known issue in which the SDK may crash on rare occasions with an array out of bounds error. This has been fixed in SDK 19.8.1.

SDK versions prior to 19.8.0 should not be used — please update to the latest version immediately.