diff --git a/src/assets/images/dropdown_arrow.png b/src/assets/images/dropdown_arrow.png
index caa42c1ffed82796540acdc192201cf20e822e0b..4f44ce8285283dae98d9d66aaf596f8e0087cc0f 100755
Binary files a/src/assets/images/dropdown_arrow.png and b/src/assets/images/dropdown_arrow.png differ
diff --git a/src/assets/images/dropdown_arrow@2x.png b/src/assets/images/dropdown_arrow@2x.png
index d4e74eb212652021837a17d860578c6f7114dcd5..f7ccabc58de0786cc8e0574fb1b8713d35ce7d0e 100755
Binary files a/src/assets/images/dropdown_arrow@2x.png and b/src/assets/images/dropdown_arrow@2x.png differ
diff --git a/src/assets/images/mic_small.png b/src/assets/images/mic_small.png
index cc41c2bb0d36ace15751bffae7d342369da2b0b3..7d04c84c5c5f3f9a6ecd21a370f0ac48a03ed1ca 100755
Binary files a/src/assets/images/mic_small.png and b/src/assets/images/mic_small.png differ
diff --git a/src/assets/images/mic_small@2x.png b/src/assets/images/mic_small@2x.png
old mode 100644
new mode 100755
index cc41c2bb0d36ace15751bffae7d342369da2b0b3..524062c02acacdda693a4472963364714f3c8617
Binary files a/src/assets/images/mic_small@2x.png and b/src/assets/images/mic_small@2x.png differ
diff --git a/src/react-components/link-root.js b/src/react-components/link-root.js
index 0fb46771ac5f5ff3adf39002071a8a841142fa4b..bd9f5bcdf3e95e42fea54e7ece99b0d31ade0ac3 100644
--- a/src/react-components/link-root.js
+++ b/src/react-components/link-root.js
@@ -168,7 +168,11 @@ class LinkRoot extends Component {
                   pattern="[0-9A-I]*"
                   value={this.state.entered}
                   onChange={ev => {
-                    this.setState({ entered: ev.target.value });
+                    if (!this.state.isAlphaMode && ev.target.value.match(/[a-z]/i)) {
+                      this.setState({ isAlphaMode: true });
+                    }
+
+                    this.setState({ entered: ev.target.value.toUpperCase() });
                   }}
                   placeholder={this.state.isAlphaMode ? "- - - -" : "- - - - - -"}
                 />