To open the data backed up by dogecoin Wallet, you need to follow the following steps:

1. Open your dogecoin wallet application.

2. On the home screen, you should see an option "Restore wallet" or "Import wallet", and select it.

3. Then, you will be asked to enter a backup phrase or backup file.

If you backed up the phrase, please enter the phrase and make sure that each word is spelled correctly.

5. If you backed up the file, please select the file and enter a password or phrase as needed.

6. After making sure the input is correct, your wallet should start to restore or import your wallet data.

7. After completion, you should be able to see your balance and transaction history, as well as your previous collection address.

Please note that it may take some time to recover the wallet, and if you are using a hardware wallet, you may need to confirm it on the device. In addition, before entering any backup data, please ensure that you are in a safe environment and do not share your backup phrases or files with anyone to protect your assets.