diff --git a/docs/device/usb/webusb.md b/docs/device/usb/webusb.md
index 5d82ce5f..4450f7ae 100644
--- a/docs/device/usb/webusb.md
+++ b/docs/device/usb/webusb.md
@@ -9,7 +9,7 @@ It allows for a **one-click download** without installing any additional app or
 
 ## Upgrade your Firmware
 
-Make sure that your @boardname@ is running version **0248** or above of the firmware. Upgrading is as easy as dragging a file and it takes a few seconds to get it done.
+Make sure that your @boardname@ is running version **0250** or above of the firmware. Upgrading is as easy as dragging a file and it takes a few seconds to get it done.
 
 [Check out the instructions to check and upgrade your @boardname@.](https://support.microbit.org/support/solutions/articles/19000084059-beta-testing-web-usb)
 
diff --git a/editor/extension.ts b/editor/extension.ts
index 05bcdf6c..3bbed4cc 100644
--- a/editor/extension.ts
+++ b/editor/extension.ts
@@ -867,7 +867,7 @@ namespace pxt.editor {
         <div class="ui grid stackable">
             <div class="column five wide" style="background-color: #FFFFCE;">
                 <div class="ui header">${lf("First time here?")}</div>
-                <strong style="font-size:small">${lf("You must have version 0248 or above of the firmware")}</strong>
+                <strong style="font-size:small">${lf("You must have version 0250 or above of the firmware")}</strong>
                 <div style="justify-content: center;display: flex;padding: 1rem;">
                     <img class="ui image" src="./static/download/firmware.png" style="height:100px;" />
                 </div>