1. Backup all your data
2. Start --> Run --> %programfiles%/Sony Ericsson/Update Service
3. Open the folder where you unzip this downgrade guide
4. delete DB folder
5. Open SE UPDATE SERVICE and force update.
6. While SEUS is downloading the necesary files, go to the folder db/13740270/blob_fs and locate the file about 370 bytes (384 in my case)
7. Rename the file inside the DOWNGRADE folder to match the file in blob_fs (remember that name, will need to delete later)
8. Once SEUS has complete the download and start the update(need to be fast with this, wait until start to update) copy the file of downgrade folder to the blob_fs folder, if you copy and overwrite the file before start the update will get an error message.
9. When SEUS finish, delete the file of step 7 (in the blob_fs folder) you notice that have a new file about 370 bytes
10. Rename the file inside the folder UPGRADE of your region to match the new file of step 9
11. Update using SEUS again and force update, when update begin (need to be faster again) copy the file of the step 10 to blob_fs folder
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