TP-Link M7350 V9 – Rayhunter + Tailscale + Telegram

📡 This setup guide applies specifically to the TP-Link M7350 V9 running BusyBox-based firmware with Tailscale and Rayhunter installed.

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📌 Device Specs

• Device: TP-Link M7350 V9
• Firmware Version: 9.0.3 Build 241219 Rel.1089n
• Rayhunter Version: 0.7.0
• CPU: ARMv7l (Qualcomm MDM9607)
• OS: BusyBox/Linux-based embedded firmware
• Tailscale: arm: tailscale_1.88.3_arm.tgz

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📥 Rayhunter Installation

Follow the official instructions to install Rayhunter:

🔗 Rayhunter GitHub Repository
📖 Installation Guide

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🛠️ Installing Tailscale on SD Card + Auto-Startup on Qualcomm MDM9607 Device

📁 SD Card Layout

Create the following structure on your SD card (e.g., mounted under /media/sdcard/):

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⚙️ Step 1: Download Tailscale Binaries

Download the Tailscale static binaries: arm: tailscale_1.88.3_arm.tgz

Extract and copy them to /media/sdcard/Tail/.

Make sure they are executable:

chmod +x /media/sdcard/Tail/tailscaled /media/sdcard/Tail/tailscale

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⚙️ Step 2: Create the Boot Script

Save this script as /media/sdcard/scripts/tailscale-boot.sh and make it executable:

chmod +x /media/sdcard/scripts/tailscale-boot.sh

• ✅ The script handles:

  • Logging to /media/sdcard/scripts/tailscale-boot.log
  • Waiting for mobile data connection (4G) before launching
  • Starting tailscaled with a fixed state directory
  • Enabling NAT routing
  • Sending boot status to Telegram with HTML formatting

🔐 Configuration Notes

• Before using the script, make sure to:

  • Replace BOT_TOKEN with your Telegram Bot Token
  • Replace CHAT_ID with your Telegram user or group ID
  • Replace --authkey with your Tailscale Auth Key (Required for authenticating the device without an interactive login.)

• Useful guides:

  • 📖 Create Telegram Bot
  • 🔎 Find Telegram Chat ID (Your User ID) > start a conversation with this bot, from menu select Account or type /acc and copy your Telegram User ID from the top. 🛡️ [ Account ] - [ xxxxxxxxxx ] 🛡️
  • 🔑 Create Tailscale Auth Key

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⚙️ Step 3: Enable Auto-Start via /etc/init.d/usb

On this device, the /etc/init.d/usb script is invoked towards the end of the boot process.

To ensure Tailscale starts cleanly only during boot, you should add the following block sh /media/sdcard/scripts/tailscale-boot.sh & inside the start) case of /etc/init.d/usb:

• ✅ This ensures:

  • Your Tailscale boot script only runs when the system is booting.
  • It does not run during manual stop/restart of USB services or during shutdown.

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✅ Step 4: Reboot & Confirm

After rebooting, you should see:

• A log file at /media/sdcard/scripts/tailscale-boot.log
• Your Tailscale daemon running in background
• Telegram alerts if configured (including boot status, IP, uptime, etc.)