> ## Documentation Index
> Fetch the complete documentation index at: https://manuals.cobo.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Restore key shares from backup file

> Guidelines for restoring key shares from a backup file to recover lost key shares.

**Note**: If the locally stored key share is lost, the key share holder can restore it utilizing the backed-up data file, provided that the file remains unaltered and accessible. Restoration in this context refers to the ability of a key share holder to retrieve their key share independently, without requiring assistance from any other keys.

## For mobile signers

For more information on how to restore your key shares, please refer to [Restore your key shares from iCloud](/en/guard/reset#restore-key-shares).

## For server signers

For more information on how to restore your key shares on server signers, please refer to [Back up your key share](https://www.cobo.com/developers/v2/guides/mpc-wallets/server-co-signer/key-shares-backup) and [Restore key shares](https://www.cobo.com/developers/v2/guides/mpc-wallets/server-co-signer/key-shares-restore).