Downgrading Verizon SM-J337V (Galaxy Eclipse J3 gen 3?) back to Oreo - Upgrading, Modifying and Unlocking

I have a Samsung sm-j337v on Verizon that I have been mostly happy and productive with until the forced OTA Pie 9.0 upgrade. Since the upgrade, the phone is noticeably slower and multitasking is a real pain in the rear.
I'd love to go back to the Oreo that the phone shipped with, but don't know if that's possible. As far as I understand it, doing a factory reset will simply leave me with a clean slate version of the currently installed version of Android which is 9.0.
Is there any way to accomplish this or am I stuck with

Hey, You can use odin to downgrade your phone on oreo but did you try a factory reset before go back to oreo ?
If you really want oreo try this fimware : https://androidfilehost.com/?fid=6006931924117896042

Related

Going back to stock or Stock like 6.0.1 Rom

Hi
I'm going to be giving my phone my Verizon Note 4 to my mother as she needs a new phone as I just upgraded and I wanted the most
stable and close to possible stock for her to use, she had a note 3 before it died.. I'm now running Emotion 7.1 rom. Phone is rooted
and unlocked.. I wouldn't mind keeping root if possible. Another question is how would I go about it just flashing with odin or twrp.
SimpyD said:
Hi
I'm going to be giving my phone my Verizon Note 4 to my mother as she needs a new phone as I just upgraded and I wanted the most
stable and close to possible stock for her to use, she had a note 3 before it died.. I'm now running Emotion 7.1 rom. Phone is rooted
and unlocked.. I wouldn't mind keeping root if possible. Another question is how would I go about it just flashing with odin or twrp.
Click to expand...
Click to collapse
paul pizz . that waz easy. its rooted and stock 6.0.1 touchwiz marshmallow. no ports no technical options she wont understand. just the samsung basics like the way u got it. only stock samsung firmware should be installed with odin. you would use twrp 3.0.2.0. not the one hsbadr made for emotion os 7.1.1 (3.0.1n or somthing)

Update from 8.1 to 9.0 while rooted?

How do I update to android pie 9.0 from oreo 8.1 while being rooted. I would like to clean flash but don't know if i should do it in TWRP (since i have it installed) or if i should install and update directly from phone updates and then re-root the phone?
I know this might seem dumbfounded. Appreciate the help!
I think there's a guide on the magisk GitHub. Check there first.
I got through it.
factory reset and fastboot flashed everything
WillowTree said:
I got through it.
factory reset and fastboot flashed everything
Click to expand...
Click to collapse
That's how I would do it.
One of the best things about Nexus / Google phones is the quick availability of the latest firmware and that one can go forwards AND backwards with versions.
I was rooted on 8.1 and got an update notification to pie. I took it, "knowing," it was gonna fail like all the previous updates. Much to my chagrin, it took! I was surprised to say the least. I was rooted again in less than half an hour...

downgrading from PIE to OREO

hello,
is there a tutorial/guide to downgrade from pie to oreo for the OP3?
not sure if its just mine or someone have the same problem as me also,
but after i upgrade to pie i noticed that my phone became slower and last night i installed the newest update, the phone batt is draining faster than ever.
tried to factory reset but still having the same problem.
++the phone is not rooted or anything, if that info helps
TIA
Danny
The easiest is to use the unbrick tool.
https://forum.xda-developers.com/oneplus-3/how-to/op3-collection-unbrick-tools-t3896722

shall i update firmwares?

Hi guys, I just bought a brand new note 10+ N975W (canada version). I'm on stock firmware. It keep asking me to update. Shall I update? which version is best to keep the battery last as long as possible?
Also, can i downgrade to previous versions or stock if i dont like the upgraded firmware?
Yes update. It's probably just security updates at this point, so there would be no reason to go back. The Note 10 firmware is fairly mature by now.
chances are if you bought it recently it is already an updated firmware unless the store is running really old stock, as they tend to produce the devices with the latest firmware at the time of manufacture. basically you would need to find a phone that was manufactured before any updates to get the original stock firmware.
chances are any phone produced this year likely has Android 10 pre installed instead of Android 9 and a much more recent security patch, so in that case you may as well update the phone as it is already updated to an extent.
as for downgrading to an actual launch firmware it's not possible as every so often they make a change that can't be reversed so it stops you going to an older firmware (I know it happend with both Android 10 and the One UI update, there are likely more points)
but in terms of battery use, everyone's numbers will differ no matter the firmware as a lot of it comes down to settings, what its used for and the environment it is ran in.
Belimawr said:
chances are if you bought it recently it is already an updated firmware unless the store is running really old stock, as they tend to produce the devices with the latest firmware at the time of manufacture. basically you would need to find a phone that was manufactured before any updates to get the original stock firmware.
chances are any phone produced this year likely has Android 10 pre installed instead of Android 9 and a much more recent security patch, so in that case you may as well update the phone as it is already updated to an extent.
as for downgrading to an actual launch firmware it's not possible as every so often they make a change that can't be reversed so it stops you going to an older firmware (I know it happend with both Android 10 and the One UI update, there are likely more points)
but in terms of battery use, everyone's numbers will differ no matter the firmware as a lot of it comes down to settings, what its used for and the environment it is ran in.
Click to expand...
Click to collapse
my phone is still running on android 9.0.
aznboix said:
my phone is still running on android 9.0.
Click to expand...
Click to collapse
Since the phone is new. Before getting to far into configuration, run the update, then do a factory reset. It'll do a fresh install of Android 10 and any security updates.
That will give you a nice clean install you can then setup.
Sent from my SM-N976V using Tapatalk
You should always update. They are mostly Security Updates, these are for security reasons (Hence the name ). Yeah there are some system modifications and enhancements too but the main reason is to ensure the device is as secure as possible
Is there a custom firmware that works perfectly?
can i root my device?
can i flash to another firmware? Asia firmware for exemple
what are the apps that i can't miss on note 10+?
which firmware that has vietnamese language?
thanks

Factory Reset downgraded to Android 10 from 11. How to get back to 11 without upgrading to UI 3.0??

So my S20 U.S. factory unlocked from Samsung had to be factory reset for warranty work. Before I reset the phone, it had UI 2.5 with Android 11 on it. Now, after reset it has UI 2.5 and Android 10.. When I go to check for updates in software update, it tells me to update to UI 3.0 and Android 11.. I originally upgraded to android 11 on 2.5 before they released official UI 3.0 and I like UI 2.5 for various reasons and don't want to upgrade to that, but I do want Android 11 back on my phone. How can I accomplish that? There has to be a way, no? Maybe through flashing?
I used my unlocked S20 on Tmobile network, so it loaded the Tmo firmware on there once I put my sim card in and those were the upgrades that I was getting throughout the time.
Thanks in advance!

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