[Q] data recovery + root questions topic

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Hello everyone I have a problem which requires some help.

My parents accidentally did a factory reset and lost all her contacts and phonebook, so I am trying to recover it. I tried to use Tenorshare android recovery but found out it won't work without root so I have a few questions regarding that.

I found a guide on how to root here without the knox counter going up and voiding the warranty.

http: androidxda.net/how-to-root-galaxy-s4-gt-i9505-on-android-5-0-1-lollipop-without-tripping-knox

and these are my details and also I am on 5.01 GTI9505 Galaxy Samsung 4

AP: I9505XXUH0B8

CP: I9505XXUH0B8

CSC: I9505VFRHOC1

Firstly regarding the bootloader can I use this bootloader

I9505XXUHOB7 bootloader
md5:1e02a99ed0a26a9acf5b12bdb1778c18

Since my CP and AP is I9505XXUH0B8 and the bootloader is I9505XXUHOB7, the last digit is one less and does not match so I would like to confirm if it will work.

My final question is since the storage is similar to a PC in that if something gets deleted and as long as that part of the sector is not overwritten, there is a high chance of recovery I am trying to limit over writing the storage as much as possible.

So I would like to ask can I skip parts of the guide

http: androidxda.net/how-to-root-galaxy-s4-gt-i9505-on-android-5-0-1-lollipop-without-tripping-knox

For example skipping steps 1 to 9 as I am already on 5.01 offical firmware and all those steps seem to do is reinstall 5.01 or is the enable everRoot setting essential to rooting the device.

I mean if I have to put 2.6 + gigs of data on the device then there is a high chance that the data will be overwritten.

Oh one more thing I would like to ask is can I root using an external SDCARD.

Alternatively would it be better to downgrade to 4.4.2 firmware then root?

Or is it too late and the chances of recovery is slim in which case there is no point to losing the warranty as well.

I would like to know what my options are.

Thank you very much for taking the time to read this thread and for any assistance you can provide.

Kind Regards

xda-developers


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