diff --git a/src/app/app.component.ts b/src/app/app.component.ts
index 0ead7d4..5ff3a62 100644
--- a/src/app/app.component.ts
+++ b/src/app/app.component.ts
@@ -8,7 +8,7 @@ import { MatSnackBar } from '@angular/material/snack-bar';
 })
 export class AppComponent {
   title = 'testube';
-  teslaUserAgentRegEx = /Tesla\/([0-9]{4}.[0-9]{1,2}.?[0-9]{0,2}.?[0-9]{0,2})-(.*)/g;
+  teslaUserAgentRegEx = /Tesla\/(develop-)*([0-9]{4}.[0-9]{1,2}.?[0-9]{0,2}.?[0-9]{0,2})-(.*)/g;
   isFullscreen : boolean;
   theaterZoomLevel : number = 0.64; // make size 64% of original size to account for ViewPort oddness in Tesla Theater Mode.
 
diff --git a/src/app/pages/debug/debug.component.ts b/src/app/pages/debug/debug.component.ts
index ad1be7f..9d33d01 100644
--- a/src/app/pages/debug/debug.component.ts
+++ b/src/app/pages/debug/debug.component.ts
@@ -18,7 +18,7 @@ export class DebugComponent implements OnInit {
   zoom: number;
   maxZoom: number;
   minZoom: number;
-  teslaUserAgentRegEx = /Tesla\/([0-9]{4}.[0-9]{1,2}.?[0-9]{0,2}.?[0-9]{0,2})-(.*)/g;
+  teslaUserAgentRegEx = /Tesla\/(?:develop-)*([0-9]{4}.[0-9]{1,2}.?[0-9]{0,2}.?[0-9]{0,2})-(.*)/g;
 
   constructor() {}
 
@@ -41,7 +41,7 @@ export class DebugComponent implements OnInit {
 
   getTeslaFirmware(): string {
     console.log(this.userAgent.match(this.teslaUserAgentRegEx))
-    return this.userAgent.match(this.teslaUserAgentRegEx)[0].split('/')[1];
+    return this.teslaUserAgentRegEx.exec(this.userAgent)[1];
   }
 
   getViewport(width: boolean): string {