[Tutorial] How to use Research Download tool to backup Unisoc (Spreadtrum) firmware
[Tutorial] How to use Research Download tool to backup Unisoc (Spreadtrum) firmware
Follow the steps below to backup Unisoc / Spreadtrum ROM with Research Download tool
See the video below or @ https://www.youtube.com/watch?v=RHNeLCITJkoQuote:In this video tutorial, I'll be explaining
how to use Research Download tool to backup
a Spreadtrum device's firmware.
Apologies about my voice, I have a cold so
sorry about that.
You're going to need Research Download tool,
I'll link to that in the description below.
You're also going to need to have installed
your Spreadtrum USB drivers, I'll also link
to that and you're going to need the pac file
for your phone model.
The question is, If you already have a pac
file for your model, why do you then need
to backup.
Well, the answer is that the pac file you
have might not be for your exact variant (build
number).
What you really need is the FDL 1&2 from the
pac file.
If you have that (these) then you don't need
the pac file but if you don't have then you'll
have to download a pac file for your model.
Now, once you have your Research Download
tool, drivers and a firmware (.pac file) for
your model (not compulsorily your build number),
you launch Research Download tool and you
wait for it to come up.
Now, once it comes up, you're going to load
the pac file which you have for your phone
model.
You click on Load Packet, highlight the pac
file then click on Open.
Now, you wait while the pac file gets loaded.
You're going to see blue boxes starting from
one then all the way to this point.
When that happens then you're ready to proceed
so you have to wait till that is done.
Once that is done, you're going to have something
like this.
From this point, its very straightforward.
You click Settings and under Main page, you
untick (uncheck) everything except FDL 1&2
and maybe one harmless partition like boot
logo.
Now, for the backup proper.
You come under Flash Operations.
Tick Active Read Flash then you can select
all partitions you intend to flash (*backup).
For me, I'll just select (let's say) prodnv
and recovery just for this guide and click
OK.
Once you do that, you click on this button
which is Start Downloading.
At this point, you power off the device, still
with battery in it, you hold the boot key.
For Spreadtrum, it could be volume down or
volume up depending on your Spreadtrum device.
Mine is volume down.
You hold it down then connect it to the PC
via a USB cable.
Wait for detection.
Once that starts, backup proper should begin.
Alright, so that is done.
You can head over to the Research Download
tool folder, ReadFlash folder and you're going
to find whatever files you've backed up.
These are files I'd previously backed up.
That's how to backup a Spreadtrum Android
device's firmware (pac file) using Research
Download tool.
If you got stuck at any point in this guide
then ensure to drop your comment(s) below
and we'll be happy to assist you.
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