Revert to OxygenOS 3.1.0 from HydrogenOS 2.5.1/OxygenOS 3.5.5 made easy - OnePlus 2 General

Here is the solution for you guys who have flashed HydrogenOS 2.5.1 or OxygenOS 3.5.5 and want to revert to OxygenOS 3.1.0:
1-Flash HydrogenOS 2.5.1/OxygenOS 3.5.5 and back up it via twrp recovery
2-Download this Nandroid Backup package: https://mega.nz/#!UUUThSqb!ySGhPUYIP6gjPY_M_c9nTvQ3LMhk07LRsCd1LqE5sEE
3-Extract it and put it in the same folder as your twrp back up(Put it where you see the date)
4-Boot to recovery and make a full wipe
5-Restore the Nandroid Backup that you have downloaded above
6-Reboot and Enjoy
With this you will have zero issue. No IMEI2 shows 0 problem, no signal drops, no issue at all.
Just make sure you strictly follow the instruction
Don't forget to press my thanks button
Note: That's not something I just imagine. It's something I did personally and shared it with you.

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Tested and worked also for reverting from OxygenOS 3.5.5 to OxygenOS 3.1.0

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Thx for the guide, but can I use CM 14.1 after following this guide?
Without any random reboots and drops?

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Cryer said:
Thx for the guide, but can I use CM 14.1 after following this guide?
Without any random reboots and drops?
Click to expand...
Click to collapse
Of course you can.

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Yousvel said:
Of course you can.
Click to expand...
Click to collapse
Ty, but it does not work for me.
I full wiped the system and still got the wallpaper of shelf, anything else still wiped tho
And IMEI2 is still 0 :crying:

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Cryer said:
Ty, but it does not work for me.
I full wiped the system and still got the wallpaper of shelf, anything else still wiped tho
And IMEI2 is still 0 :crying:
Click to expand...
Click to collapse
You have to do that prior to flashing H2OS.
Please, flash HydrogenOS, then follow the instructions

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Yousvel said:
You have to do that prior to flashing H2OS.
Please, flash HydrogenOS, then follow the instructions
Click to expand...
Click to collapse
dosent work i did the instructions

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With this guide, i will have old oxygen os modem on my oneplus 2?

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levis007 said:
With this guide, i will have old oxygen os modem on my oneplus 2?
Click to expand...
Click to collapse
it worked for you?

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Mikeyy233 said:
it worked for you?
Click to expand...
Click to collapse
I haven't tried it yet.. Just taking precautions.

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levis007 said:
I haven't tried it yet.. Just taking precautions.
Click to expand...
Click to collapse
is it a hardware issue or software? i have to pay oneplus 103$ to get repaired.. i tried the intstructions in the post didnt work for me

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Mikeyy233 said:
is it a hardware issue or software? i have to pay oneplus 103$ to get repaired.. i tried the intstructions in the post didnt work for me
Click to expand...
Click to collapse
Most probably software issue. Did you used that modem erase command ???

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yes
---------- Post added at 02:47 AM ---------- Previous post was at 02:47 AM ----------
the camera wont load without IMEI 2?
---------- Post added at 02:55 AM ---------- Previous post was at 02:47 AM ----------
Should i pay them?

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levis007 said:
With this guide, i will have old oxygen os modem on my oneplus 2?
Click to expand...
Click to collapse
Yes

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Number 1 of the Instructions updated

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Yousvel said:
Here is the solution for you guys who have flashed HydrogenOS and want to revert to OxygenOS:
1-Flash HydrogenOS and back up it via twrp recovery
2-Download this Nandroid Backup package: https://mega.nz/#!UUUThSqb!ySGhPUYIP6gjPY_M_c9nTvQ3LMhk07LRsCd1LqE5sEE
3-Extract it and put it in the same folder as your twrp back up(Put it where you see the date)
4-Boot to recovery and make a full wipe
5-Restore the Nandroid Backup that you have downloaded above
6-Reboot and Enjoy
With this you will have zero issue. No IMEI2 shows 0 problem, no signal drops, no issue at all.
Just make sure you strictly follow the instruction
Don't forget to press my thanks button
Note: That's not something I just imagine. It's something I did personally and shared it with you.
Click to expand...
Click to collapse
Quick question.. will it matter in the slightest if my SIM is in the phone or not?
It worked!!! It worked 100% as stated!!! SIM2 (which I don't use but tested earlier was dead) now it's working!!!! IT'S FIXED!!!!!!!!!
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which h2os 2.5.1??
or older one

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The only issue I'm having is this bizarre problem when I'm disconnected from WiFi my data signal defaults to H+ and not LTE.. I have to cycle airplane mode... It just won't stick to LTE ..
Sent from my ONE A2005 using Tapatalk

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In step 1, which partition to backup?

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gocke55014 said:
In step 1, which partition to backup?
Click to expand...
Click to collapse
I didn't change any if the default selections..
Sent from my ONE A2005 using Tapatalk