Not much to be done in hindsight, sadly (and possibly thankfully since it would jeopardize crypto if one could just bypass all security of a physical device!
![Lips sealed](https://bitcointalk.org/Smileys/default/lipsrsealed.gif)
)
To mention on earlier topic, there was actually some guy with a Trezor a while back who lost his pin and somehow (with help) managed to get the PIN-code out of the device after alot of work.
But this was patched, and we can assume that any active exploit isn't common knowledge, since it requires a lot of knowledge in the first place.
And also, it's Trezor, not Nano Ledger.
Nano Ledger is Closed-Source so it'd seem much more difficult to "reverse engineer".
With a seed phrase, you can recover your private key, but that obviously doesn't help much in this case.
![Undecided](https://bitcointalk.org/Smileys/default/undecided.gif)
However,
hopefully you only uninstalled something and didn't lose actual access.
If you do get your access back, send your BTC somewhere, generate a new wallet, send it back, and
keep that seed phrase safe and in multiple locations!
(online is fine if you make sure you encrypt it, or jumble it with a dictionary or something along those lines).
A few months old discussion about someone losing his seed phraseLong and interesting story of the guy with his Trezor