======UPGRADE FIRMWARE BY DELETING FLASH FILES======



**Symptoms:**
  * How to Upgrade Firmware by Deleting Flash Files  
  * How to Recover RAS1500 by Deleting Flash Files  
  * Error: "MM-SRAM .DFM failed CRC test failed 11040000"  
  * Problems during upgrade to 2.0.10 - Completes system execute sequence, then receives the following messages: "REG 0 X 0700 ERROR: "(stack trace then 6 different hex addresses come up) - Message :"DEAD DEAD" and the RAS1500 Reboots  
 

**Facts:** 
  * SuperStack II Remote Access System 1500  
  * RAS1500  
  * Upgrade failed  
  * Cannot upgrade  
  * Upgrading by deleting the Flash files  Recovering the RAS1500  
  * RASBOOT.DMF  
  * RAS1500.DMF  
  * CLI  

**Fixes:** Please access the console by using Hyperterminal with the following settings: 38400 8,N,1 

**1.** Access the RAS 1500's command line interface (CLI) through a terminal program (such as HyperTerminal) that supports the ZMODEM transfer protocol 

**2.** At the CLI prompt, type reboot, then press Enter to reboot the RAS 1500 

**3.** Type Y, then press Enter to confirm the reboot procedure. The reboot procedure starts Note: If you do not get a prompt, please cycle the power of the unit 

**4.** When the "Initializing" message is displayed, press the Escape key three times in succession to bypass diagnostics and start the SDL2 code 

**5.** When the "SDL2 is ready" message appears (followed by a list of AT commands), type AT{E}, then press Enter 

**6.** When the "Initializing" message is displayed, press the Escape key three times in succession to bypass diagnostics and start the SDL2 code 

**7.** When the "SDL2 is ready" message appears (followed by a list of AT commands), type AT{Z}, then press Enter. A "Begin download now" message appears 

**8.** From the Transfer menu, select Send File. The Send File dialog box appears 

**9.** Click Browse. The Select File to Send dialog box appears 

**10.** In the directory where you unzipped the files, locate rasboot.dmf 

**11.** Select the rasboot.dmf file, then click Open. The Send File dialog box appears again 

**12.** Click Send. The download process starts. A progress indicator appears. When the download process is complete, the boot process begins 

**13.** When the "Initializing" message is displayed, press the Escape key three times in succession to bypass diagnostics and start the SDL2 code 

**14.** When the "SDL2 is ready" message appears (followed by a list of AT commands), type AT{Z}, then press Enter. A "Begin download now" message appears 

**15.** From the Transfer menu, select Send File. The Send File dialog box appears 

**16.** Click Browse. The Select File to Send dialog box appears 

**17.** In the directory where you unzipped the files, locate ras1500.dmf 

**18.** Select the ras1500.dmf file, then click Open. The Send File dialog box appears again 

**19.** Click Send. The download process starts. A progress indicator appears. When the download process is complete, the boot process finishes and automatically reboots with the new software 

**20.** Please run through Quick Setup  
 



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  * Product(s):  SuperStack II Remote Access System 1500  
  * Sub Product(s): None set  




 --- //[[nce@itclatam.com|David Gonzalez]] 2021/04/10 10:38//