IMX53 wce7 tftp timeout

Embedded Devices Windows CE
1

I generate an OS image of wce,the size of it is 33M,I have transfered and updated it successfully by tftp.the next I custom an OS image of wce , the size of it is 63M, this time,I could’t transfered by tftp.It prompt “Connection 172.168.1.1:3089 timed out”.In tftp server settings,I have selected "Allow package size negotiation"and “Exceed max packages limit on TFTP protocol.” what i should do now? thanks for helping.

2

This might help
http://www.digi.com/support/kbase/kbaseresultdetl?id=3385

3

I used netsh to change the value of MTU (MTU=1500),but the fault is still.

4

Try unchecking the ‘Allow package size negotiation’ but leave ‘Exceed max packages limit on TFTP protocol.’ checked. Some Ethernet cards have problems with the ‘Allow package size negotiation’ option.