AP无法进入基本段的修复操作指导

步骤一、设备上电，当出现System is starting...，输入Ctrl +D，进入基本段，出现如下类似界面：

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<1> Modify Serial Interface Parameter

<2> Update Extend BootWare

<3> Update Full BootWare

<4> Boot Extend BootWare

<5> Boot Backup Extend BootWare

<0> Reboot

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步骤二、输入1，选择修改波特率

注：本案例设备默认波特率是9600。

Enter your choice(0-5): 1

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Note:'*'indicates the current baudrate                                   

     Change The HyperTerminal's Baudrate Accordingly                  

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<1> 9600(Default)*                                                 

<2> 19200                                                         

<3> 38400                                                           

<4> 57600                                                           

<5> 115200                                                          

<0> Exit                                                             

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步骤三、为了加快上传速率，输入5，选择使用最大波特率115200（注意：将PC恻波特率同步修改为115200）

Enter your choice(0-5): 5

Baudrate has been changed to 115200 bps.

Please change the terminal's baudrate to 115200 bps, press ENTER when ready.

The current baudrate is 115200 bps

==============================================================

|Note:'*'indicates the current baudrate                                   

     Change The HyperTerminal's Baudrate Accordingly                  

------------------------------------------------------

<1> 9600(Default)                                                        

<2> 19200                                                                

<3> 38400                                                                 

<4> 57600                                                                

<5> 115200*                                                              

<0> Exit                                                                  

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步骤四、输入0，返回操作主界面

Enter your choice(0-5): 0

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<1> Modify Serial Interface Parameter                                     

<2> Update Extend BootWare                                           

<3> Update Full BootWare                                                 

<4> Boot Extend BootWare                                                 

<5> Boot Backup Extend BootWare                                          

步骤五、输入3，选择下载Bootware文件，下载。

Enter your choice(0-5): 3

Please Start To Transfer File, Press To Exit.

Waiting ...C

Download successfully!

329344 bytes downloaded!

PC侧SecureCRT发送文件的设置如下：（注意：将PC恻波特率同步修改为115200）

步骤六、下载完成后，按照提示操作，升级基本段和扩展段。

Updating Basic BootWare? [Y/N]Y

Updating Basic BootWare...............Done!

Updating Extend BootWare? [Y/N]Y

Updating Extend BootWare...........Done!

步骤七、升级完成后，进入主菜单，如同步骤2进入修改波特率菜单，把波特率修改回默认的波特率，例如：本案例是9600。（注意：将PC恻波特率同步修改为9600）

==============================================================

|Note:'*'indicates the current baudrate                       

     Change The HyperTerminal's Baudrate Accordingly      

------------------------------------------------------

<1> 9600(Default)                                      

<2> 19200                                             

<3> 38400                                              

<4> 57600                                             

<5> 115200*                                           

<0> Exit                                               

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Enter your choice(0-5): 1

Baudrate has been changed to 9600 bps.

Please change the terminal's baudrate to 9600 bps, press ENTER when ready.

The current baudrate is 9600 bps

步骤八、输入0，返回主菜单，再次输入0，重启即可。

==============================================================

|Note:'*'indicates the current baudrate                       

     Change The HyperTerminal's Baudrate Accordingly      

------------------------------------------------------

<1> 9600(Default)*                                     

<2> 19200                                            

<3> 38400                                            

<4> 57600                                            

<5> 115200                                            

Enter your choice(0-5): 0

=============================================

<1> Modify Serial Interface Parameter                                    

<2> Update Extend BootWare                                           

<3> Update Full BootWare                                             

<4> Boot Extend BootWare                                             

<5> Boot Backup Extend BootWare                                       

<0> Reboot                                                           

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Enter your choice(0-5): 0