Why is it that Samsung allows exchange of high value phones only for particular cities? It is because of this finicky policy of theirs that many Note 10 owners like me are unable to upgrade to a Note 20. Is there any way of rectifying this?
You will not lose warranty if you roll back. However since its a downgrade your device will be wiped and you will lose all your data. So backup everything before downgrading. Also flash the downgrade firmware through Odin