iTel A80 A671L ANTI CRACK DIAG PORT NOT WORKING FIX

Fixed: My iTel A80 (A671L) DIAG Port Wasn’t Working — Here’s How I Got It Back

Hey, so just wanted to share something real quick in case it helps someone out.

A couple of days ago, I was trying to fix up an old iTel A80 (model A671L — yeah, confusing name, I know). Anyway, the phone was powering on fine, but I couldn’t get DIAG mode to work no matter what I tried. Tools wouldn’t detect it, and I was stuck.

After messing around for a while (and almost giving up), I found a method that actually worked. It’s pretty simple once you know what you’re doing. Here's what I did.

The Problem

Basically, if the DIAG port isn’t showing up on your PC, you can’t do things like IMEI repair, QCN backup, or SIM unlocks. In my case, I had flashed the phone earlier, and something clearly went wrong.

Turns out, a few system partitions got corrupted, and anti-crack protection might’ve blocked some functions.

What You’ll Need

You don’t need anything fancy — just the basics:

•  A Windows computer
• USB cable (decent quality)
• Pandora Tool (free to use)
• Two files:
1. A dump file to fix the broken partitions
2. The stock firmware (ROM) for the A80
3. 
   
4. Step 1: Restoring the Dump File

This is the part that brought the DIAG port back to life for me.

📥 Dump File Download
👉 Click here

Here’s how I did it:

1. First, I turned off the phone completely.
2. Booted it into EDL mode (Google it if you’re unsure — a test point might be needed).
3. Plugged it into my PC.
4. Opened Pandora Tool and loaded up the dump file.
5. Hit restore — waited a few minutes.

Once it finished, the phone still booted — and boom — DIAG mode was back when I checked on the PC.

Step 2: Flash the Stock ROM — but Carefully

Just to clean things up, I decided to flash the original firmware. But there’s a catch here: if you flash over the wrong partitions, you could mess up your IMEI or network settings.

📥 Stock ROM Download

👉 Click here

Before flashing, make sure you SKIP these partitions:

•  NV_LTE
• TDFS
• TRANSEC

Here’s what I did:

1. Loaded the firmware in Pandora.
2. Unchecked those three partitions.
3. Started the flash.
4. Waited it out and rebooted the phone.

1. The Result?

Phone booted up perfectly. DIAG port worked like normal, and the phone was smooth. No signal issues, no IMEI loss. Everything just… worked.

Quick Tips

•  Install Qualcomm drivers if your PC doesn’t recognize the phone.
• Use a short, good-quality USB cable.
• Don’t panic if Pandora freezes for a second — just be patient.
• In Short

If you’ve got an iTel A80 (A671L) with a broken DIAG port, don’t give up on it. This method works. It’s just two main steps:

1. Restore partitions with a dump file.
2. Flash the stock ROM, but skip a few sensitive partitions.

DOWNLOAD LINKS