C20/B20 Reinstall uImage

            Update uImage on uboot mode 

            115200 8 n 1
            the baudrate is 115200
            •   ready tftp Server ,you can use the tftp32 tftp server,include the uImage directory 
            •  get into uboot mode
            step 1:
            #set serverip
            #set ipaddr
            must  show alive 

            you must disable the firewall of your tftp server computer,otherwise tftp will be blocked
            step 2:
            #sf erase 40000 7c0000;tftp 80200000 iSpeaker-ver-1.0.11.bin;

            notice:the ${filesize} is  output result last step,like 55bd1c 

            #sf write 80200000 40000 ${filesize};reset 

            step3:(log in uboot mode again)

            #set imagename iSpeaker-ver-1.0.11;save;reset

            Updated: 12 Dec 2018 03:13 PM
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