If it gets stucked, please let me know ( need to know the block, doing some math )
Wallet started to work as expected since this:
https://bitcointalksearch.org/topic/m.5985217
I have finished and started it again several times since then and always the blockchain syncs normally.
If I keep the Debug/Information window opened I can see the blockchain "moving" towards next blocks. Also, is always synced with dedicatedpool.
That could be the final fix.
The time will show. One more day, if everything goes as we expect, there will be a new wallet with a new checkpoint