do the following
1.from the .brd file select the pad using tools-->padstack-->modify design padstack
2.now you are in padstack designer window. Do the required changes
3.then click file -->save to file (in the padstack desinner)
4. now click file-->update to design
make sure flash symbol is available in your mapped library paths
Added after 10 seconds:
do the following
1.from the .brd file select the pad using tools-->padstack-->modify design padstack
2.now you are in padstack designer window. Do the required changes
3.then click file -->save to file (in the padstack desinner)
4. now click file-->update to design
make sure flash symbol is available in your mapped library paths