Hello,
I have doubts about wallets, I have never used it, I have always left it on Exchage, but I want to migrate now, but I still have some doubts, I would like some help.
I have wallet preference, but I'm afraid to leave in Exchange, and so far wallet insurance would only be for BTC, LTC and ETH (Coinbase, Blockchain Wallet, Myetherwallet)

My coins: Verge, Aeternity and Siacoin, all have their own wallet, but I have some doubts:
1) Every time I get the updates of these portfolios and I'm not aware of this, if I fail to update some version, or do some kind of error occur at the moment of the update, can I lose my coins?
2) If there is a problem on my SSD and lose all data, is there any way to recover the coins?
3) Can I install the wallet an External HD?

Portfolios Hardware:
As far as I found, a reliable wallet would be the Ledger Wallet (But it does not support my coins):
1) Is there another portfolio in Hardware?
2) Is it really reliable?
3) Need Updates?

Portfolios Online:
1) Any danger of leaving on Exchange (even with 2-step verification and authorization to withdraw via email)?

General:
What is the safest way to store the coins?