diff --git a/src/components/App.tsx b/src/components/App.tsx
index 0e7e660..1ebed77 100644
--- a/src/components/App.tsx
+++ b/src/components/App.tsx
@@ -44,7 +44,8 @@ const UploadFlow: React.FC<{ options: UploadOptions; verbose: boolean }> = ({
   const {
     status,
     message,
-    progress,
+    sendProgress,
+    confirmProgress,
     currentFileIndex,
     totalFiles,
     uploadSteps,
@@ -96,7 +97,8 @@ const UploadFlow: React.FC<{ options: UploadOptions; verbose: boolean }> = ({
           <UploadProgress
             status={status}
             message={message}
-            progress={progress}
+            sendProgress={sendProgress}
+            confirmProgress={confirmProgress}
           />
           <ConnectionStatus steps={uploadSteps} />
         </Box>
@@ -107,7 +109,8 @@ const UploadFlow: React.FC<{ options: UploadOptions; verbose: boolean }> = ({
           <UploadProgress
             status={status}
             message={message}
-            progress={progress}
+            sendProgress={sendProgress}
+            confirmProgress={confirmProgress}
           />
           <Box marginTop={1}>
             <Text color="green">Device is ready to use!</Text>
@@ -120,7 +123,8 @@ const UploadFlow: React.FC<{ options: UploadOptions; verbose: boolean }> = ({
           <UploadProgress
             status={status}
             message={message}
-            progress={progress}
+            sendProgress={sendProgress}
+            confirmProgress={confirmProgress}
           />
           <Box marginTop={1}>
             <Text color="red">Please check your device and try again.</Text>
diff --git a/src/components/UploadProgress.tsx b/src/components/UploadProgress.tsx
index af6328f..1cd7662 100644
--- a/src/components/UploadProgress.tsx
+++ b/src/components/UploadProgress.tsx
@@ -5,28 +5,45 @@ import Spinner from "ink-spinner";
 interface UploadProgressProps {
   status: "connecting" | "uploading" | "success" | "error";
   message?: string;
-  progress?: number;
+  sendProgress?: number;
+  confirmProgress?: number;
 }
 
-const ProgressBar: React.FC<{ progress: number }> = ({ progress }) => {
-  const percentage = Math.round(progress);
-  const barLength = 30;
-  const filledLength = Math.round((progress / 100) * barLength);
-  const filled = "█".repeat(filledLength);
-  const empty = "░".repeat(barLength - filledLength);
+const BAR_LENGTH = 30;
 
-  const getBarColor = () => {
-    if (percentage < 100) return "cyan";
-    return "green";
-  };
+const ShadowProgressBar: React.FC<{
+  sendProgress: number;
+  confirmProgress: number;
+}> = ({ sendProgress, confirmProgress }) => {
+  const sentFilled = Math.round((sendProgress / 100) * BAR_LENGTH);
+  const confirmFilled = Math.round((confirmProgress / 100) * BAR_LENGTH);
+  const pct = Math.round(sendProgress);
 
-  const barContent = filled + empty;
+  const bar = Array.from({ length: BAR_LENGTH }, (_, i) => {
+    if (i < confirmFilled)
+      return (
+        <Text key={i} color="green">
+          █
+        </Text>
+      );
+    if (i < sentFilled)
+      return (
+        <Text key={i} color="cyan">
+          █
+        </Text>
+      );
+    return (
+      <Text key={i} color="dim">
+        ░
+      </Text>
+    );
+  });
 
   return (
     <Box marginTop={1}>
       <Text color="dim">[</Text>
-      <Text color={getBarColor()}>{barContent}</Text>
-      <Text color="dim">] {percentage}%</Text>
+      {bar}
+      <Text color="dim">] {pct}%</Text>
     </Box>
   );
 };
@@ -34,7 +51,8 @@ const ProgressBar: React.FC<{ progress: number }> = ({ progress }) => {
 export const UploadProgress: React.FC<UploadProgressProps> = ({
   status,
   message,
-  progress,
+  sendProgress = 0,
+  confirmProgress = 0,
 }) => {
   const getStatusColor = () => {
     switch (status) {
@@ -49,18 +67,18 @@ export const UploadProgress: React.FC<UploadProgressProps> = ({
     }
   };
 
-  const getStatusIcon = () => {
-    switch (status) {
-      case "success":
-        return "✓";
-      case "error":
-        return "✗";
-      default:
-        return null;
-    }
-  };
+  const statusIcon =
+    status === "success" ? "✓" : status === "error" ? "✗" : null;
 
-  const statusIcon = getStatusIcon();
+  const showBar = status === "uploading" || status === "success";
+  const effectiveSend = status === "success" ? 100 : sendProgress;
+  const effectiveConfirm = status === "success" ? 100 : confirmProgress;
+
+  const isConfirming =
+    status === "uploading" && sendProgress >= 100 && confirmProgress < 100;
+  const displayMessage = isConfirming
+    ? (message?.replace(/^Sending:/, "Confirming:") ?? "Confirming...")
+    : message || status.toUpperCase();
 
   return (
     <Box flexDirection="column" paddingY={1}>
@@ -73,12 +91,15 @@ export const UploadProgress: React.FC<UploadProgressProps> = ({
         {statusIcon && <Text color={getStatusColor()}>{statusIcon}</Text>}
         <Box marginLeft={1}>
           <Text color={getStatusColor()} bold>
-            {message || status.toUpperCase()}
+            {displayMessage}
           </Text>
         </Box>
       </Box>
-      {progress !== undefined && status === "uploading" && (
-        <ProgressBar progress={progress} />
+      {showBar && (
+        <ShadowProgressBar
+          sendProgress={effectiveSend}
+          confirmProgress={effectiveConfirm}
+        />
       )}
     </Box>
   );
diff --git a/src/hooks/useUpload.ts b/src/hooks/useUpload.ts
index 979dfb5..fb97d30 100644
--- a/src/hooks/useUpload.ts
+++ b/src/hooks/useUpload.ts
@@ -12,7 +12,8 @@ export function useUpload(options: UploadOptions, verbose: boolean) {
     "connecting" | "uploading" | "success" | "error"
   >("connecting");
   const [message, setMessage] = useState<string>("Initializing...");
-  const [progress, setProgress] = useState<number>(0);
+  const [sendProgress, setSendProgress] = useState<number>(0);
+  const [confirmProgress, setConfirmProgress] = useState<number>(0);
   const [currentFileIndex, setCurrentFileIndex] = useState<number>(0);
   const [totalFiles, setTotalFiles] = useState<number>(1);
 
@@ -174,14 +175,16 @@ export function useUpload(options: UploadOptions, verbose: boolean) {
               },
               { id: "complete", label: "Finalizing", status: "pending" },
             ]);
-            setProgress(0);
+            setSendProgress(0);
+            setConfirmProgress(0);
 
               const success = await uploader.uploadImageFromFile(
                 imagePath,
                 targetSize,
                 animationSize,
-                (prog: number, status?: string) => {
-                  setProgress(prog);
+                (send: number, confirm: number, status?: string) => {
+                  setSendProgress(send);
+                  setConfirmProgress(confirm);
                   if (status) {
                     setMessage(`${i + 1}/${imagesToUpload.length}: ${status}`);
                   }
@@ -215,8 +218,9 @@ export function useUpload(options: UploadOptions, verbose: boolean) {
             success = await uploader.uploadCheckerboard(
               targetSize,
               8,
-              (prog: number, status?: string) => {
-                setProgress(prog);
+              (send: number, confirm: number, status?: string) => {
+                setSendProgress(send);
+                setConfirmProgress(confirm);
                 if (status) {
                   setMessage(status);
                 }
@@ -227,8 +231,9 @@ export function useUpload(options: UploadOptions, verbose: boolean) {
               options.image,
               targetSize,
               animationSize,
-              (prog: number, status?: string) => {
-                setProgress(prog);
+              (send: number, confirm: number, status?: string) => {
+                setSendProgress(send);
+                setConfirmProgress(confirm);
                 if (status) {
                   setMessage(status);
                 }
@@ -271,7 +276,8 @@ export function useUpload(options: UploadOptions, verbose: boolean) {
   return {
     status,
     message,
-    progress,
+    sendProgress,
+    confirmProgress,
     currentFileIndex,
     totalFiles,
     uploadSteps,
diff --git a/src/lib/ble/ble-client.ts b/src/lib/ble/ble-client.ts
index f37b3e3..79021c1 100644
--- a/src/lib/ble/ble-client.ts
+++ b/src/lib/ble/ble-client.ts
@@ -510,13 +510,13 @@ export class BleUploader {
    * Send image data packets to device with batched acknowledgment waiting
    * @param fullData Complete image data payload
    * @param packetType Packet type for header
-   * @param onProgress Progress callback with (progress, status)
+   * @param onProgress Progress callback with (sendProgress 0-100, confirmProgress 0-100, status)
    * @returns True if successful
    */
   public async sendData(
     fullData: Buffer,
     packetType: PacketType,
-    onProgress?: (progress: number, status?: string) => void,
+    onProgress?: (sendProgress: number, confirmProgress: number, status?: string) => void,
   ): Promise<boolean> {
     if (!this.writeCharacteristic) {
       throw new ConnectionError("BLE client not connected");
@@ -589,17 +589,9 @@ export class BleUploader {
 
       // Report progress
       if (onProgress) {
-        // Sending contributes 50% of this packet's progress
-        const sendProgress = ((i + 1) / totalChunks) * 50;
-        // Acks contribute the other 50%
-        const ackProgress =
-          (this.notificationHandler.packetSuccessCount / totalChunks) * 50;
-        const combinedProgress = sendProgress + ackProgress;
-
-        onProgress(
-          combinedProgress,
-          `Sending: (${i + 1}/${totalChunks} packets)`,
-        );
+        const sendProgress = ((i + 1) / totalChunks) * 100;
+        const confirmProgress = (this.notificationHandler.packetSuccessCount / totalChunks) * 100;
+        onProgress(sendProgress, confirmProgress, `Sending: (${i + 1}/${totalChunks} packets)`);
       }
 
       await this.sleep(this.chunkDelay * 1000);
@@ -623,16 +615,9 @@ export class BleUploader {
           }
 
           if (onProgress) {
-            // Update progress as acks come in
-            const sendProgress = ((i + 1) / totalChunks) * 50;
-            const ackProgress =
-              (this.notificationHandler.packetSuccessCount / totalChunks) * 50;
-            const combinedProgress = sendProgress + ackProgress;
-
-            onProgress(
-              combinedProgress,
-              `Sending: (${this.notificationHandler.packetSuccessCount}/${totalChunks} packets)`,
-            );
+            const sendProgress = ((i + 1) / totalChunks) * 100;
+            const confirmProgress = (this.notificationHandler.packetSuccessCount / totalChunks) * 100;
+            onProgress(sendProgress, confirmProgress, `Sending: (${this.notificationHandler.packetSuccessCount}/${totalChunks} packets)`);
           }
 
           await this.sleep(100);
@@ -651,7 +636,7 @@ export class BleUploader {
    * @returns True if all acks received without error
    */
   public async waitForResponse(
-    onProgress?: (progress: number, status?: string) => void,
+    onProgress?: (sendProgress: number, confirmProgress: number, status?: string) => void,
   ): Promise<boolean> {
     this.notificationHandler.waitingForAck = true;
 
@@ -679,18 +664,11 @@ export class BleUploader {
       }
 
       if (onProgress) {
-        // All packets sent (50%), waiting for remaining acks (0-50%)
-        const sendProgress = 50; // All packets already sent
-        const ackProgress =
+        const confirmProgress =
           (this.notificationHandler.packetSuccessCount /
             this.notificationHandler.expectedAckCount) *
-          50;
-        const combinedProgress = sendProgress + ackProgress;
-
-        onProgress(
-          combinedProgress,
-          `Confirming: (${this.notificationHandler.packetSuccessCount}/${this.notificationHandler.expectedAckCount} packets)`,
-        );
+          100;
+        onProgress(100, confirmProgress, `Confirming: (${this.notificationHandler.packetSuccessCount}/${this.notificationHandler.expectedAckCount} packets)`);
       }
 
       await this.sleep(100); // Check every 100ms
@@ -704,7 +682,7 @@ export class BleUploader {
     if (success) {
       logger.info("All acknowledgments received");
       if (onProgress) {
-        onProgress(100, "Upload complete");
+        onProgress(100, 100, "Upload complete");
       }
     } else if (
       this.notificationHandler.packetSuccessCount <
diff --git a/src/lib/core/beambox-uploader.ts b/src/lib/core/beambox-uploader.ts
index 75c7460..a94259d 100644
--- a/src/lib/core/beambox-uploader.ts
+++ b/src/lib/core/beambox-uploader.ts
@@ -24,7 +24,7 @@ export interface UploadOptions {
   imageData?: Buffer;
   targetSize?: [number, number];
   animationSize?: [number, number];
-  onProgress?: (progress: number, status?: string) => void;
+  onProgress?: (sendProgress: number, confirmProgress: number, status?: string) => void;
   dumpDir?: string;
 }
 
@@ -358,7 +358,7 @@ export class BeamBoxUploader {
   private async uploadAnimation(
     filePath: string,
     targetSize: [number, number],
-    onProgress?: (progress: number) => void,
+    onProgress?: (sendProgress: number, confirmProgress: number, status?: string) => void,
     dumpDir?: string,
   ): Promise<boolean> {
     const animationSize: [number, number] = targetSize;
@@ -476,7 +476,7 @@ export class BeamBoxUploader {
     imagePath: string,
     targetSize?: [number, number],
     animationSize?: [number, number],
-    onProgress?: (progress: number, status?: string) => void,
+    onProgress?: (sendProgress: number, confirmProgress: number, status?: string) => void,
     dumpDir?: string,
   ): Promise<boolean> {
     return await this.upload({
@@ -498,7 +498,7 @@ export class BeamBoxUploader {
   public async uploadCheckerboard(
     targetSize?: [number, number],
     squares?: number,
-    onProgress?: (progress: number, status?: string) => void,
+    onProgress?: (sendProgress: number, confirmProgress: number, status?: string) => void,
     dumpDir?: string,
   ): Promise<boolean> {
     const effectiveSize = targetSize ?? this.imageConfig.defaultSize;