if you used 0.8.8.0 client you must download chain again with 0.8.8.1, 0.8.8.0 client had a bug that made chain stuck
if you are updating from 0.8.7.1 to 0.8.8.1 you dont need to re download chain, just update the client.
new wallet will fork to neoscrypt at block 266000!


tested new wallet will accept solo mined coins with scrypt
so i see there is a go to pools update their source?