How to resolve the “Loading File Failed” issue when Upgrading the COMWARE in Bootrom Menu

I.          Description

When upgrading the COMWARE in S7500 switch, we may do the operation in Bootrom Menu. However, after we set the FTP or TFTP parameters and start the upgrading process, we may encounter the issue that the console prints the following information:

0xff76a90 (tBoot): arpresolve: can't allocate llinfo0xff76a90 (tBoot): arpresolv

e: can't allocate llinfo0xff76a90 (tBoot): arpresolve: can't allocate llinfo0xff

76a90 (tBoot): arpresolve: can't allocate llinfo0xff76a90

…

Prepare for loading...FAILED!                                                  

Loading file failed  

II.        Resolution

When we see the information above, we will think it may be a hardware issue and something wrong with the Flash. However, it is a mistake of empiricism. The true reason of the issue is that we add certain unrecognized characters when we set the FTP/TFTP parameters in Boortom Menu.  

For a instance, when we use FTP to upload the software, we need to set the IP address in the Bootrom Menu, for example 192.168.1.1. By mistake, we may add a extra Space character to the end of the 192.168.1.1, like “192.168.1.1 “. If we set the parameter like this, the “Loading File Failed” issue will occur.

1. Set TFTP protocol parameter                                                 

2. Set FTP protocol parameter                                                   

3. Set XMODEM protocol parameter                                               

0. Return to boot menu                                                         

Enter your choice(0-3): 2                                                      

Load File name           :patchmain  s7500-vrp310-r3135.app                    

Switch IP address        :192.168.1.1  192.168.1.1                             

Server IP address        :192.168.1.100  192.168.100                           

FTP User Name            :7506                                                 

FTP User Password        :111111                                               

Are you sure you want to download file to flash? Yes or No(Y/N) n              

1. Set TFTP protocol parameter                                                 

2. Set FTP protocol parameter                                                   

3. Set XMODEM protocol parameter                                               

0. Return to boot menu                                                         

Enter your choice(0-3): 2                                                      

Load File name           :s7500-vrp310-r3135.app                               

Switch IP address        :192.168.1.1  192.168.1.1                             

Server IP address        :192.168.100                                          

FTP User Name            :7506                                                 

FTP User Password        :111111                                               

Are you sure you want to download file to flash? Yes or No(Y/N) y              

0xff76a90 (tBoot): arpresolve: can't allocate llinfo0xff76a90 (tBoot): arpresolv

e: can't allocate llinfo0xff76a90 (tBoot): arpresolve: can't allocate llinfo0xff

76a90 (tBoot): arpresolve: can't allocate llinfo0xff76a90 (tBoot): arpresolve: can't allocate llinfo                                                           

Prepare for loading...FAILED!                                                  

Loading file failed                        

The resolution of this issue is to reset the FTP or TFTP parameters with the correct value.