diff --git a/apps.json b/apps.json
index 4c6f3bdcf..88db38bbb 100644
--- a/apps.json
+++ b/apps.json
@@ -1536,7 +1536,7 @@
   {
     "id": "assistedgps",
     "name": "Assisted GPS Update (AGPS)",
-    "version": "0.02",
+    "version": "0.03",
     "description": "Downloads assisted GPS (AGPS) data to Bangle.js 1 or 2 for faster GPS startup and more accurate fixes. **No app will be installed**, this just uploads new data to the GPS chip.",
     "icon": "app.png",
     "type": "RAM",
diff --git a/apps/assistedgps/ChangeLog b/apps/assistedgps/ChangeLog
index 4ec2c8f71..739ccf915 100644
--- a/apps/assistedgps/ChangeLog
+++ b/apps/assistedgps/ChangeLog
@@ -1,2 +1,3 @@
 0.01: New App!
 0.02: Update to work with Bangle.js 2
+0.03: Select GNSS systems to use for Bangle.js 2
diff --git a/apps/assistedgps/custom.html b/apps/assistedgps/custom.html
index fa11b696c..80d68a71f 100644
--- a/apps/assistedgps/custom.html
+++ b/apps/assistedgps/custom.html
@@ -27,6 +27,31 @@
       </div>
     </div>
     <div id="banglejs2-info" style="display:none">
+      <p>Using fewer GNSS systems may decrease the time to fix. (If unsure, select only GPS)</p>
+      <div class="form-group">
+        <label class="form-label">Select which GNSS system you want.</label>
+        <label class="form-radio">
+          <input type="radio" name="gnss_select" value="1" checked><i class="form-icon"></i> GPS
+        </label>
+        <label class="form-radio">
+          <input type="radio" name="gnss_select" value="2"><i class="form-icon"></i> BDS
+        </label>
+        <label class="form-radio">
+          <input type="radio" name="gnss_select" value="3"><i class="form-icon"></i> GPS+BDS
+        </label>
+        <label class="form-radio">
+          <input type="radio" name="gnss_select" value="4"><i class="form-icon"></i> GLONASS
+        </label>
+        <label class="form-radio">
+          <input type="radio" name="gnss_select" value="5"><i class="form-icon"></i> GPS+GLONASS
+        </label>
+        <label class="form-radio">
+          <input type="radio" name="gnss_select" value="6"><i class="form-icon"></i> BDS+GLONASS
+        </label>
+        <label class="form-radio">
+          <input type="radio" name="gnss_select" value="6"><i class="form-icon"></i> GPS+BDS+GLONASS
+        </label>
+      </div>
     </div>
     <p id="upload-wrap" style="display:none">Click <button id="upload" class="btn btn-primary">Upload</button></p>
 
@@ -116,8 +141,13 @@
         }
         if (isB2) { // CASIC
 
-          // Disable BDS, use just GPS (supposedly improve lock time)
-          js += `\x10Serial1.println("${CASIC_CHECKSUM("$PCAS04,1")}")\n`; // set GPS-only mode
+          // Select what GNSS System to use for decreased fix time.
+          var radios = document.getElementsByName('gnss_select');
+          var gnss_select="1";
+          for (var i=0; i<radios.length; i++)
+            if (radios[i].checked)
+              gnss_select=radios[i].value;
+          js += `\x10Serial1.println("${CASIC_CHECKSUM("$PCAS04,"+gnss_select)}")\n`; // set GNSS mode
           // What about:
           // NAV-TIMEUTC (0x01 0x10)
           // NAV-PV (0x01 0x03)