Unlike updating from NCC to NanoWallet,
In the case of NanoWallet from NanoWallet, that is not necessary.
After updating, please reload the .wlt file (if necessary).
Actual update method:
Address book, .wlt file, private key must be exported.
After that you can update very easily.
As for the updating method, you will throw away the folder of NanoWallet you have used up to now.
Of course you can save it, but you will not use it.
Next, if you deploy the new NanoWallet you downloaded, the update work is over.
We will start using the new NanoWallet.
thanks