RFU6xx & RFH6xx - Password Recovery

RFU6xx and RFH6xx devices support a secure method to reset all user-defined passwords and restore factory settings.

This process requires a Micro-SD card and a terminal program capable of sending Sopas commands.

The described password recovery approach is available starting from firmware version V2.52 for RFU6xx devices and V5.30 for RFH6xx devices.

• RFU6xx with firmware V2.52 or newer OR RFH6xx with firmware V5.30 or newer
• Micro-SD card
• Terminal program to send Sopas commands
• Access to the device's power supply

1. Prepare the Micro-SD Card
   
   • Insert the Micro-SD card into your computer
   • In the root directory of the card, create an empty text file named SERVICE_RESET.txt
   • Ensure the file has no content and is correctly named
2. Power Off the Device
3. Insert the Micro-SD Card into the Device
4. Power On the Device
5. Send the Sopas Command Within 3 Minutes
   • Using your terminal program, send one of the following Sopas commands within three minutes after powering on:
     • <STX>sMN ResetDevice 1<ETX> --> including deletion of txt-file on Micro-SD card
     • <STX>sMN ResetDevice 0<ETX> --> without deletion of txt-file on Micro-SD card, for further password recovery operations with that Micro-SD card 

• Successful Reset:
  sAN ResetDevice 1
  All local data, including parameters, log files, and passwords, are deleted. The device is restored to factory settings, which are saved persistently in flash memory.
• Unsuccessful Reset:
  sAN ResetDevice 0
  Indicates an error, such as a missing SERVICE_RESET.txt file or a command sent too late