diff --git a/web/index.html b/web/index.html
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+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>WebUSB Example</title>
+    <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@4.3.1/dist/css/bootstrap.min.css"
+        integrity="sha384-ggOyR0iXCbMQv3Xipma34MD+dH/1fQ784/j6cY/iJTQUOhcWr7x9JvoRxT2MZw1T" crossorigin="anonymous">
+</head>
+
+<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"
+    integrity="sha384-YvpcrYf0tY3lHB60NNkmXc5s9fDVZLESaAA55NDzOxhy9GkcIdslK1eN7N6jIeHz"
+    crossorigin="anonymous"></script>
+
+<body>
+
+    <nav class="navbar navbar-light bg-light">
+        <a class="navbar-brand">PlayStation Camera firmware programmer</a>
+        <a class="btn btn-light" href="#" role="button">About</a>
+        <img src="https://raleighlittles.github.io/blog/assets/images/logo.png" width="30" height="30" alt="">
+
+    </nav>
+
+    <div class="container">
+
+        <div class="row mt-5">
+            <div class="column">
+                <h2> Step #1 </h2>
+            </div>
+            <div class="column ml-3 mr-2">
+                <a class="btn btn-outline-primary" id="connectBtn">Connect to Device</a>
+            </div>
+        </div>
+
+        <div class="row mt-5">
+
+
+            <div class="column">
+                <h2> Step #2 </h2>
+            </div>
+
+            <div class="column">
+                <div class="mt-5 mb-3">
+                    <label for="firmwareFileUploadBtnLabel" class="form-label">Select a firmware file to install</label>
+                    <input class="form-control" type="file" id="firmwareFileUploadBtn">
+                </div>
+
+            </div>
+
+        </div>
+
+        <!-- to be able to change the progress bar later, the id needs to be on the INNER element, not the outer -->
+        <div class="progress mt-4 mb-4" role="progressbar" aria-label="Example with label" aria-valuenow="0"
+            aria-valuemin="0" aria-valuemax="100">
+            <div class="progress-bar" id="programmingProgressBar" style="width: 0%"></div>
+        </div>
+
+
+        <div class="row">
+            <h3> Debug Log </h3>
+        </div>
+
+        <div class="row">
+            <!-- Empty by default, filled in later -->
+            <textarea id="debugLogTextArea" name="log" rows="10" cols="100"> </textarea>
+        </div>
+
+    </div>
+
+    <script>
+
+        let usbDevice;
+
+        function updateDebugLog(newString) {
+
+            let debugLogElement = document.getElementById("debugLogTextArea");
+
+            let newLogEntry = `${Date().toLocaleString()} | ${newString} \n`;
+
+            debugLogElement.innerText += newLogEntry;
+
+        }
+
+
+        function updateProgressBar(value_num, value_denom) {
+
+            let progressBarElement = document.getElementById("programmingProgressBar");
+
+            let newPercentage = `${Math.round((value_num / value_denom) * 100, 2)}%`;
+
+            progressBarElement.style.width = newPercentage;
+        }
+
+
+        async function uploadFirmwareToDevice(usbDevice, firmwareFileAsBytes) {
+
+            const uint16Max = 65536;
+
+            // USB constants
+            const maxUsbPacketSize = 512;
+
+            const firmwareFileLen = firmwareFileAsBytes.byteLength;
+
+            let fileByteIdx = 0;
+
+            let wValue = 0;
+
+            let lowerTransactionIdx = 0x14; // 20d
+            let upperTransactionIdx = 0x15; // 21d
+
+            while (fileByteIdx < firmwareFileLen) {
+
+                let pktSize = Math.min(firmwareFileLen - fileByteIdx, maxUsbPacketSize);
+                let pktEndIdx = fileByteIdx + pktSize;
+
+                let currTransactionIdx;
+
+                if (fileByteIdx < uint16Max) {
+                    currTransactionIdx = lowerTransactionIdx;
+                }
+                else {
+                    currTransactionIdx = upperTransactionIdx;
+                }
+
+                let transactionData = firmwareFileAsBytes.slice(fileByteIdx, pktEndIdx);
+
+                console.log(transactionData);
+
+                await usbDevice.controlTransferOut({ requestType: "standard", recipient: "device", request: 0x0, value: wValue, index: currTransactionIdx }, transactionData);
+
+                //console.log("Transferred", pktSize, "bytes. Value=", wValue, "index=", currTransactionIdx);
+
+                // Increment for next transaction
+                fileByteIdx += pktSize;
+
+                if (wValue > uint16Max - pktSize) {
+                    // Can't perform the addition because it would overflow
+                    // How much would it overflow by? That's the new value
+                    wValue = (wValue - (uint16Max - pktSize));
+                } else {
+                    // Regular case, no overflow
+                    wValue += pktSize;
+                }
+
+                // Update progress bar
+                updateProgressBar(fileByteIdx, firmwareFileLen);
+
+            } // end while
+
+            // now send footer packet
+
+            let footerData = Array([0x5B]).buffer;
+            await usbDevice.controlTransferOut({ requestType: "standard", recipient: "device", request: 0x0, value: 0x2200, index: 0x8018 }, footerData);
+
+        } // end function
+
+        document.getElementById("connectBtn").addEventListener("click", async () => {
+
+            const vendorID = 0x05a9;
+            const productID = 0x0580;
+
+            navigator.usb.requestDevice({ filters: [{ vendorId: vendorID, productId: productID }] })
+                .then(selectedDevice => {
+                    usbDevice = selectedDevice;
+                    return usbDevice.open();
+                }).then(() => {
+
+                    let msg = `Connected to USB device with vendorID=${vendorID}, productID=${productID} \n`;
+                    console.log(msg);
+                    //debugLogElement.innerText += msg;
+                    updateDebugLog(msg);
+
+                })
+                // Request exclusive control over interface #0, remember, the device only has 1 interface
+                .then(() => usbDevice.claimInterface(0))
+                .catch(error => { console.error("Error connecting to USB device!", error); });
+        }
+
+        ); // end connect click event listener
+
+        let firmwareFileUploadElement = document.getElementById("firmwareFileUploadBtn");
+
+        // https://stackoverflow.com/a/32556944/1576548
+        firmwareFileUploadElement.addEventListener("change", function () {
+
+            // console.log("Received upload: ", firmwareFileUploadElement.value);
+
+            var reader = new FileReader();
+
+            var fileByteArray = [];
+
+            reader.readAsArrayBuffer(this.files[0]);
+
+            reader.onloadend = function (evt) {
+
+                if (evt.target.readyState = FileReader.DONE) {
+
+                    var arrayBuffer = evt.target.result;
+
+                    var array = new Uint8Array(arrayBuffer);
+
+                    for (var i = 0; i < array.length; i++) {
+                        fileByteArray.push(array[i]);
+                    }
+
+                    let msg = `User uploaded file '${firmwareFileUploadElement.value}' with size '${arrayBuffer.byteLength}' bytes \n`;
+
+                    console.log(msg);
+                    //debugLogElement.innerText += msg;
+                    updateDebugLog(msg);
+
+                    console.log("array", array.buffer);
+
+                    //console.log("fileByteArray", fileByteArray);
+
+                    uploadFirmwareToDevice(usbDevice, fileByteArray).then(() => console.log("finished uploading firmware!"));
+                }
+            }
+
+        }); // end change file event listener
+    </script>
+</body>
+
+</html>
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diff --git a/web/index.html.bak b/web/index.html.bak
new file mode 100644
index 0000000..a6e8446
--- /dev/null
+++ b/web/index.html.bak
@@ -0,0 +1,35 @@
+<!DOCTYPE html>
+<html lang="en">
+
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>WebUSB Example</title>
+</head>
+
+<body>
+    <button id="connectButton">Connect to Device</button>
+
+    <script>
+        document.getElementById('connectButton').addEventListener('click', async () => {
+
+            const vendorID = 0x05a9;
+            const productID = 0x0580;
+
+            let usbDevice;
+
+            navigator.usb.requestDevice({ filters: [{ vendorId: vendorID, productId: productID }] })
+                .then(selectedDevice => {
+                    usbDevice = selectedDevice;
+                    return usbDevice.open(); // Begin a session.
+                }).then(() => console.log("Connected to USB device with vendorID=", vendorID, ", productID=", productID))
+                // Request exclusive control over interface #0, remember, the device only has 1 interface
+                .then(() => usbDevice.claimInterface(0))
+                .catch(error => { console.error(error); });
+            }
+            
+            ); // end click event listener
+    </script>
+</body>
+
+</html>
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