How to Backup/restore bootloader/PDS & downgrade bootloader |
Update: Mike has successfully downgraded bootloader of his L7 from 08.D0 to 08.A0. Now we can also backup & restore PDS for L7 (R4513).
Tool you need
P2K Easy tool v3.9
IMPORTANT: Before you do any part of the following steps, you have to get your phone detected as S Blank Neptune LTE2 first, either by testpointing or by flashing to the BlankNeptuneLTE2 flash file.
Part 1: Downgrade bootloader to 08.A0
1. download my 08.A0 bootloader file (at bottom of the post)
2. start p2k easy tool v3.9, select your phone model, select "repair" tab, choose "write bootloader", double click the text box to choose the downloaded 08.A0 bootloader file
3. disconnect, then connect your phone to computer via USB cable, wait for a few seconds
4. click button "do selected jobs" in p2k easy tool
5. if successful, you should see the messages as shown in the image above
Part 2: backup bootloader
1. start p2k easy tool v3.9, select your phone model, select "read" tab, choose "read bootloader", double click the text box to choose where to save the bootloader file
2. disconnect, then connect your phone to computer via USB cable, wait for a few seconds
3. click button "do selected jobs" in p2k easy tool
4. if successful, you should see the messages as shown in the image above
Part 3: restore bootloader
1. start p2k easy tool v3.9, select your phone model, select "repair" tab, choose "write bootloader", double click the text box to choose the backup bootloader file
2. disconnect, then connect your phone to computer via USB cable, wait for a few seconds
3. click button "do selected jobs" in p2k easy tool
4. if successful, you should see the messages as shown in the image above
Part 4: backup PDS
(You may want to repair the PDS before you make a backup of it, if you get "s blank neptune LTE2" by flashing.)
1. start p2k easy tool v3.9, select your phone model, select "read" tab, choose "read pds backup", double click the text box to choose where to save the pds file
2. disconnect, then connect your phone to computer via USB cable, wait for a few seconds
3. click button "do selected jobs" in p2k easy tool
4. if successful, you should see the messages as shown in the image above
Part 5: restore PDS
1. start p2k easy tool v3.9, select your phone model, select "repair" tab, choose "write PDS", double click the text box to choose the backup PDS file
2. disconnect, then connect your phone to computer via USB cable, wait for a few seconds
3. click button "do selected jobs" in p2k easy tool
4. if successful, you should see the messages as shown in the image above
(If you get "s blank neptune LTE2" by flashing, you need to do steps in this guide "repair S blank neptune LTE2" to get your phone working again.)
By downloading this file or re-posting any part of my blog post, you agree to the followings:
1. I am not responsible for any damage to your phone, so use it at your own risk.
2. You do not use this file to get profit.
3. You do not provide direct download of the file. Instead, you must link to my blog for downloading the file.
Download:
Yuet's 08.A0 bootloader: [inbrite.com]
Mike's 08.D0 bootloader: [inbrite.com]
09.02 bootloader: [inbrite.com]
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