- Aug 28, 2021
I really cant say about Nokia 5.1
Sorry for late answer. I'd like to ask you, whether there is a way how to downgrade my Nokia 5.1? I am open to make an agreement with you regarding creation/preparation of scatter & DA too. Of course, only in case, that you would like to. What do you think? Is there a way?
Very very thanks to both of you (Hikari calyx and bx2nero). I finally downgrade it from android 10 to 8.1.0, and it becomes blezzingly fast now from that lagggy android 10 ver. , keep helping and one more thing during this process i found "notice that 90% of life time of storage in your device has passed, please change to new device as soon as possible. " What is its means?This guide is for downgrading /Unbrick /Flash Stock Firmware Nokia 5.1 plus to Android Pie or Oreo.
This is STRICTLY for Global Nokia 5.1 plus variant NOT for Chinese variant Nokia X5. If you want to downgrade Chinese variant then follow this guide by hikari_calyx
Guide For Chinese Variant (X5).
What you need ::
1.MTK- Smart Phone Flashing tool which can be downloaded here. (v5.1804) Download
2.Android platform tools and ADB and fastboot drivers . Download
3. MTK Port drivers , For windows only. Download
- Oreo - PDA-1100-0-00WW-B01_unpacked.7z from . Download
- Pie - PDA-214A-0-00WW-B01.full.zip from here . Download
STEP 1 : Backup your important files from internal storage and remove all google accounts from your phone to prevent FRP lock.
STEP 2 : Install all drivers and files mentioned above and extract your desired Firmware .
STEP 3 : Create a full backup using SP Flash tool (must do).
Open Smart Phone Flash Tool, choose the Download Agent file and Scatter File from the unpacked firmware.
DO NOT USE DOWNLOAD AGENT FROM THE FLASH TOOL ITSELF, USE ONLY THE ONE PROVIDED IN THE FIRMWARE.
Should look like this-
View attachment 5204559
Then move to "Readback" and tap on add and choose you location where you want save you backup after that you double click on the created readback section and you will see this :
View attachment 5204565
Use any text editor to open the scatter file from extracted firmware , and find "userdata". You'll need the start address of userdata as the length of the full backup.
View attachment 5204567
And change the length from the address you found under "userdata" in scatter file like this and tap ok.
View attachment 5204569
Click on "Readback" and the connect you phone in flashing mode with both volume button pressed and release upon the readback process starts ( you can see it in the lower progress bar).
View attachment 5204571
STEP 4 : Upon completion of the readback process , close SP Flash tool and unplug you phone and trigger it to fastboot mode and change your Active partition to "a" by this command.
Open cmd to use this command.
View attachment 5204573
After this process completes , power off you phone .
STEP 5 : Flashing your firmware.
Open SP Flash Tool and check that DA and Scatter is loaded from your extracted Firmware.
Choose "DOWNLOAD ONLY" mode , not any other or you will loose important partitions.
Then click on download and connect your phone in flashing mode by both volume button pressed and release upon the download process starts ( you can see it in the lower progress bar).
View attachment 5204575
After its finished, it will show "Download OK" popup.
View attachment 5204583
Now just close SP Flash tool , unplug you phone and reboot.
Enjoy your downgraded/ Unbricked Nokia 5.1+.
Special thanks to :
hikari_calyx for Firmware and solving all the errors.
Someone , Someone and Someone for testing this guide.
Hit Thanks if it worked for you.
where did u see this notice ?Very very thanks to both of you (Hikari calyx and bx2nero). I finally downgrade it from android 10 to 8.1.0, and it becomes blezzingly fast now from that lagggy android 10 ver. , keep helping and one more thing during this process i found "notice that 90% of life time of storage in your device has passed, please change to new device as soon as possible. " What is its means?
hell, what it means?. is there is something like" life "of emmc or non- living things too, plz share any thread if there too, i will love to gain this knowledge