Root My Phone came rooted or modified and I want to remove it...

[Finn Le Moenic]

Last week I bought an almost brand new Galaxy S8 for super cheap on Ebay, the guy said that the phone had been used for "networking"

When I got the phone the software had already been reset, but when I went to use Google Pay and it didn't work. I then opened Samsung health and it told me the phone was rooted or modified.

I then downloaded superSU but it said that there was no root detected

 

[bcrichster]

Look for Magisk because SuperSu got outdated and kinda shut down.. To remove any Root, simply reinstall factory FW via ODIN and all will be well

 

[Hadron]

If you want to remove any modifications you need to completely reflash the device. You can find the firmware on sammobile.com - you'll need the full model number (not just s8) to find the right version. Then you need a computer and some Samsung software to flash it - I'm not a Samsung expert but I'm sure the site will tell you what you need.

 

[lunatic59]

Last week I bought an almost brand new Galaxy S8 for super cheap on Ebay,

I can almost guarantee that an S8+ bought for "super cheap" (less than $200) on eBay will have one of the following issues.

1.) it's not genuine Samsung. There are a lot of counterfeit phones out there, especially of popular brands.
2.) It's been blacklisted, either because it was stolen, it was reported stolen (for insurance fraud) or it was tied to a contract that went into default.
3.) It's for an unusual market or has an odd hardware configuration that isn't compatible with most countries.

 

[bcrichster]

Yes.. Look in Settings-Device-AboutPhone (or similar) to get the exact model number and software version your device needs. One warning tho, do NOT flash an older software than what you are currently using or you'll end up with a paperweight

 

[Jfalls63]

Knox probably tripped.

 

[bcrichster]

Knox probably tripped.

Oh yeah, forgot about that one!