To recover a secret you will need the unencrypted shares from the recovery partners.
To recover a secret you need to give the identifier you used during backup (usually your Ethereum address) to your recovery partners and ask them to retrieve their backup piece and send it to you.
1
To recover a secret you need the decrypted shares from your original recovery partners
You need to send your unique identifier to your original contacts (recovery partners).
Each of them must send you back their decryted share
2
Send identifier
Make sure you remember your original partners.
Always use a secure encrypted channel for sending keys.