diff --git a/index.html b/index.html
index 6fb0d73..237d65d 100644
--- a/index.html
+++ b/index.html
@@ -293,7 +293,7 @@
     <div class="container">
       <footer>
         <div class="d-flex flex-column flex-sm-row justify-content-between py-4 my-4 border-top" id="footbody">
-          <p><a target="_blank" href="https://github.com/dualshock-tools/dualshock-tools.github.io/commits/main/"><span class="ds-i18n">Version</span> 2.15</a> (2025-09-13) - <a href="#" class="ds-i18n" onclick="show_donate_modal();">Support this project</a>&nbsp;<span id="authorMsg"></span></p>
+          <p><a target="_blank" href="https://github.com/dualshock-tools/dualshock-tools.github.io/commits/main/"><span class="ds-i18n">Version</span> 2.16 beta 4</a> (2025-09-09) - <a href="#" class="ds-i18n" onclick="show_donate_modal();">Support this project</a>&nbsp;<span id="authorMsg"></span></p>
 
           <ul class="list-unstyled d-flex">
             <li class="ms-3"><a class="link-body-emphasis" href="mailto:ds4@the.al" target="_blank"><svg class="bi" width="24" height="24"><use xlink:href="#mail"/></svg></a></li>
diff --git a/js/controllers/base-controller.js b/js/controllers/base-controller.js
index 4e797ef..5d92c16 100644
--- a/js/controllers/base-controller.js
+++ b/js/controllers/base-controller.js
@@ -54,11 +54,12 @@ class BaseController {
   */
   alloc_req(id, data = []) {
     const fr = this.device.collections[0].featureReports;
-    const report = fr.find(e => e.reportId === id);
+    const [report] = fr.find(e => e.reportId === id)?.items || [];
     const maxLen = report?.reportCount || data.length;
 
-    const out = new Uint8Array(data.length);
-    out.set(data.slice(0, maxLen));
+    const len = Math.min(data.length, maxLen);
+    const out = new Uint8Array(maxLen);
+    out.set(data.slice(0, len));
     return out;
   }
 
@@ -72,7 +73,13 @@ class BaseController {
     if (Array.isArray(data)) {
       data = this.alloc_req(reportId, data);
     }
-    return await this.device.sendFeatureReport(reportId, data);
+
+    try {
+      return await this.device.sendFeatureReport(reportId, data);
+    } catch (error) {
+      // HID doesn't throw proper Errors with stack (stack is "name: message") so generate a new stack here
+      throw new Error(error.stack);
+    }
   }
 
   /**
diff --git a/js/controllers/ds5-controller.js b/js/controllers/ds5-controller.js
index 0b14b39..e85f731 100644
--- a/js/controllers/ds5-controller.js
+++ b/js/controllers/ds5-controller.js
@@ -95,7 +95,9 @@ class DS5Controller extends BaseController {
     const { l } = this;
     // Device-only: collect info and return a common structure; do not touch the DOM
     try {
+      console.log("Fetching DS5 info...");
       const view = lf("ds5_info", await this.receiveFeatureReport(0x20));
+      console.log("Got DS5 info report:", buf2hex(view.buffer));
       const cmd = view.getUint8(0, true);
       if(cmd != 0x20 || view.buffer.byteLength != 64)
         return { ok: false, error: new Error("Invalid response for ds5_info") };
@@ -160,6 +162,7 @@ class DS5Controller extends BaseController {
       return { ok: true, infoItems, nv, disable_bits, pending_reboot };
     } catch(e) {
       la("ds5_info_error", {"r": e})
+      console.error(e.stack);
       return { ok: false, error: e, disable_bits: 1 };
     }
   }
diff --git a/js/core.js b/js/core.js
index 367650b..e6f76b8 100644
--- a/js/core.js
+++ b/js/core.js
@@ -51,7 +51,7 @@ function gboot() {
       show_popup(event.error?.message || event.message);
     });
 
-    window.addEventListener("unhandledRejection", (event) => {
+    window.addEventListener("unhandledrejection", (event) => {
       console.error("Unhandled rejection:", event.reason?.stack || event.reason);
       close_all_modals();
       show_popup(event.reason?.message || event.reason);
@@ -105,13 +105,15 @@ async function connect() {
     }
 
     if (devices.length > 1) {
-      $("#btnconnect").prop("disabled", false);
-      $("#connectspinner").hide();
       throw new Error(l("Please connect only one controller at time."));
     }
 
-    const device = devices[0];
-    if(device.opened) await device.close();
+    const [device] = devices;
+    if(device.opened) {
+      console.log("Device already opened, closing it before re-opening.");
+      await device.close();
+      await sleep(500);
+    }
     await device.open();
 
     la("connect", {"p": device.productId, "v": device.vendorId});
@@ -126,6 +128,7 @@ async function connect() {
 async function continue_connection({data, device}) {
   try {
     if (!controller || controller.isConnected()) {
+      console.log("Already connected. Reset input report handler.");
       controller?.setInputReportHandler(null);
       return;
     }
@@ -135,9 +138,6 @@ async function continue_connection({data, device}) {
     // Detect if the controller is connected via USB
     const reportLen = data.byteLength;
     if(reportLen != 63) {
-      $("#btnconnect").prop("disabled", false);
-      $("#connectspinner").hide();
-      await disconnect();
       throw new Error(l("Please connect the device using a USB cable."));
     }
 
@@ -159,9 +159,6 @@ async function continue_connection({data, device}) {
 
       info = await controllerInstance.getInfo();
     } catch (error) {
-      $("#btnconnect").prop("disabled", false);
-      $("#connectspinner").hide();
-      await disconnect();
       if (device) {
         throw new Error(l("Connected invalid device: ") + dec2hex(device.vendorId) + ":" + dec2hex(device.productId));
       } else {
@@ -171,11 +168,8 @@ async function continue_connection({data, device}) {
 
     if(!info?.ok) {
       // Not connected/failed to fetch info
-      $("#btnconnect").prop("disabled", false);
-      $("#connectspinner").hide();
-      await disconnect();
-      if(info) console.error(info.error);
-      throw new Error(l("Connected invalid device: ") + l("Error 1"));
+      if(info) console.error(JSON.stringify(info, null, 2));
+      throw new Error(l("Connected invalid device: ") + l("Error 1") + (info?.error ? ` (${info.error}).` : '. '));
     }
 
     connected = true;
@@ -184,6 +178,7 @@ async function continue_connection({data, device}) {
     applyDeviceUI(ui);
 
     // Assign input processor for stream
+    console.log("Setting input report handler.");
     device.oninputreport = controller.getInputHandler();
 
     const deviceName = ControllerFactory.getDeviceName(device.productId);
@@ -203,9 +198,6 @@ async function continue_connection({data, device}) {
 
     // Edge-specific: pending reboot check (from nv)
     if (model == "DS5_Edge" && info?.pending_reboot) {
-      $("#btnconnect").prop("disabled", false);
-      $("#connectspinner").hide();
-      await disconnect();
       throw new Error(l("A reboot is needed to continue using this DualSense Edge. Please disconnect and reconnect your controller."));
     }
 
@@ -236,6 +228,9 @@ async function continue_connection({data, device}) {
     if(model == "DS5_Edge") {
       show_edge_modal();
     }
+  } catch(err) {
+    await disconnect();
+    throw err;
   } finally {
     $("#btnconnect").prop("disabled", false);
     $("#connectspinner").hide();
diff --git a/js/modals/finetune-modal.js b/js/modals/finetune-modal.js
index 7c0c43b..92c33cd 100644
--- a/js/modals/finetune-modal.js
+++ b/js/modals/finetune-modal.js
@@ -285,7 +285,7 @@ export class Finetune {
   }
 
   async _readFinetuneData() {
-    const data = await ds5_get_inmemory_module_data(); //mm there's also a missing await here
+    const data = await this.controller.getInMemoryModuleData();
     if(!data) {
       throw new Error("ERROR: Cannot read calibration data");
     }