I finished adding MimbleWimble Coin and Grin support to Ledger Live Mobile! Anyone who wants to try it can download the Android APK here.
Also, here’s all the changes that I’ve made to the hardware wallet apps and Ledger software since my last post. Huge thanks to the MimbleWimble Coin and Grin communities for suggesting several of these changes!
- Requires user confirmation on the hardware wallet when receiving.
- Hardware wallets shows a progress bar when creating Bulletproofs.
- Sped up creating Bulletproofs on hardware wallets by about 10%.
- Ledger Live Desktop/Mobile give the option to change a transaction’s base fee.
- Ledger Live Desktop/Mobile show a syncing percent when adding a new account.
- Fixes sending to and receiving from Grin++.
- Fixes transactions being removed when clearing the cache in Leger Live Desktop/Mobile.
- Implemented several optimizations to reduce syncing times.
And with that, everything required by Ledger to add MimbleWimble Coin and Grin support to their official Ledger Live Desktop and Ledger Live Mobile releases is now complete 
Now we just have to wait for Ledger to finish auditing the code and merging in the changes. However, based on how slowly Ledger seems to operate, I’m not expecting this to happen anytime soon.