downgrading from 12 to 11 - Samsung Galaxy Note 20 Ultra Questions & Answers

I am currently on ATT and am trying to downgrade from 12 to 11 due to a few apps i need not working properly anymore. Ive tried looking for guides online but they arent much help finding the right firmware i need, i tried searching on here as well and only found custom firmware. any help would be appreciated. I already have odin downloaded and i think all i need now is the firmware

Hello @er842 ,
Were you able to accomplish the downgrade?

This S20U user did.
OP, what apps weren't compatible?

Related

[Q] Need the Rom for SHV-E150S

I have been looking for the official firmware of SHV-E150S for the past three days, and I came up empty.
I have tried various methods, such as the KIES hack, without any luck.
In case you are wondering SHV-E150S is the Korean version of the Galaxy Tab 7.7 LTE
The problem with SHV-E150S is that since it's not a popular phone in Korea, Samsung is neglecting its support for the phone.
Thus, there has not been a single firmware update since its release early this year. So I do not think I can use KIES to obtain the firmware
I am really desperate right now, and any help to find a firmware for SHV-E150S will be greatly appreciated.
By the way, according to the KIES registry information, the Software Revision version is E150SKRFB25, which I'd assume it to be the firmware version.
Also, if other (foreign) firmwares can be used for the phone, please give me some pointers or directions.
I really don't care about maintaining the locality or korean-specific aspects of this phone
Thanks in advance.
I didn't even know there was a Korean LTE version, let alone one with PHONE functions. I wonder if a dev can hack an image of that tab to work on the i815 to gain phone functionality. The E150S seems to have different LTE bands tho ;[
E150S: http://pdadb.net/index.php?m=specs&id=3436&c=samsung_shv-e150s_galaxy_tab_7.7_lte_m16
i815: http://pdadb.net/index.php?m=specs&id=3257&c=verizon_samsung_sch-i815_galaxy_tab_7.7_lte
I can dream, right ?
Sorry tho. I Wish I could help.
Maybe a dev here can help you obtain CWM for the device so that you can create a stock nandroid image?
Actually all I need to do is root the phone, since I need it for development.
Since a rooted firmware does not exist, I just assumed that I would need the stock firmware for rooting.
Please correct me if I am wrong, and let me know how to root it without getting the stock firmware.
This root method has worked so far for the 6800, 6810 and i815 versions. Maybe it would work for you?
http://forum.xda-developers.com/showpost.php?p=21584547&postcount=1
ngeroons 41.75.
Thanks for the input,
But it says,
E:signature verification failed
Installation aborted.
And, something funny about my tablet is that it seems like it's not reading from the SD card. I had to save it in the tablet for the recovery tool to see the file.
Problem Solved!!
I finally got the firmware thanks to
samsung-update.com
SAMMOBILE
The firmware for SVH-E150S can now be found at either
sammobile.com
samsung-updates.com/latest-firmware
It seems like I can't post the urls since I am new to this forum....
So can't write down the full URL, but I figure most of you should know these websites already
GalaxyTab 7.7 LTE - ICS_UH11
http_://www_.mediafire_.com/_?aqt3cf3pijp9j
Rom file download via the following link.
Ps. '_' Delete
must root shv-e150s
Dear kthlee,
It appears you were able to download the ROM image and root your galaby tab. I bought a shv-e150s in Korea last year. And I very much want to root it to get rid of several annoyances that are useless if you are not in Korea. Can you perhaps post a step-by-step of how you did it? I know how to download the image from sammobile, that is not the problem. What to do afterwards is what I do not know. I fear I will just end up with a newly formatted tablet, still not rooted. Thank you in advance.

Is there any tools i can use like odin?

I was on android 11 which was just way to buggy eo i used the rollback file and since iv rolled back to coloros 7.1 there has been a couple of apps freezing and things, so i tried to install the latest versions from other regions and it says i cant downgrade because this version is lower than the one im on, so basically im looking for a tool like odin so i can flash any firmware i want (besides chinese roms obvs)
Thank yous.

Installing ROM and Changing Firmware

Good evening ladies and gents,
I got a phone today from Amazon Galaxy Note 10 Plus. SM-N975F/DS.
Got it activated on AT&T which took a bit of trickery but finally got it activated.
So now I am in the process of rooting it and noticed that there are many region specific firmware (you have to use Magisk to patch the firmware (the .md5)). For example mine is N975FXXU6FUCD-MID which was difficult to find and difficult to identify. I have located this (MID) region and its Iraq. As I type this that exact firmware is downloading from SMAMOBILE. I will be flashing a custom ROM within the next few hours. I was wondering tho, since there is no USA Firmware version, will the custom ROM change the firmware thus rendering this entire post irrelevant? Does the firmware matter if the phone is activated and functioning, or is there anything else anyone would suggest? For example should I flash a firmware from perhaps Mexico since its the same continent?
I ask because as I stated above, I am downloading the N975FXXU6FUCD-MID firmware now, and I have to use Magisk to patch the firmware so I just figured I would patch the exact same firmware that is on the phone currently but should i patch a different firmware instead?
Anyway, If anyone has any insight into this I'd love to hear it. Thank you!

Firmware needed to rollback to Android 11?

Hey there. I'm on this website "https://mirrors.lolinet.com/firmware/motorola/cofud/official/" trying to find out which firmware to download to rollback to Android 11. I know I need XT2173-3 but can't figure out what which Q3-26-8X-X to get. I don't see anything like that string on my bootloader screen.
It would help to provide more details. What device are you trying to do this on?
I'm trying to rollback too, Android 12 is terrible on the Moto g31. Did you manage to find the correct firmware @superdrampee?
Thought I found the right firmware, and followed a spanish tutorial on youtube that seemed good. Bricked phone. Yay...

Dirty flashing Android 12 to Android 13 N986U (ATT).

Hello,
I recently upgraded my Note 20 Ultra (N986U) (ATT) (unlocked) from Android 11 to Android 12 (N986USQU2EVA9) by dirty flashing via Odin. I followed a guide on this forum and thankfully, my phone updated with no issues whatsoever with my data and apps intact. This basically means that I flashed normally except I used the HomeCSC and I left "userdata" empty at Odin.
I just realized that SamFW posted the new ATT firmware, Android 13 (N986USQU3GVK5) and I wanted to update to it via Odin.
The reason on why I want to update it via Odin instead of OTA is simply because I don't live in the USA and I don't have an ATT Sim/network in my country. Can I still follow the dirty flash method for this? I'm just a bit afraid that since it uses a different bootloader version or maybe because of the android version difference I may go into bootloop with no way out. Has anyone tried this?
I would like to apologize if this question has been asked before. I tried scrolling through the depths of XDA forums for answers but I can't seem to find any answers. Thank you for your time!
Hey there just wanna give a quick update.
Yes, it works fine. I've done it personally and every apps, data etc. is intact.
I hope this is useful for anyone who is in the same predicament as me.
yousof577 said:
Hello,
I recently upgraded my Note 20 Ultra (N986U) (ATT) (unlocked) from Android 11 to Android 12 (N986USQU2EVA9) by dirty flashing via Odin. I followed a guide on this forum and thankfully, my phone updated with no issues whatsoever with my data and apps intact. This basically means that I flashed normally except I used the HomeCSC and I left "userdata" empty at Odin.
I just realized that SamFW posted the new ATT firmware, Android 13 (N986USQU3GVK5) and I wanted to update to it via Odin.
The reason on why I want to update it via Odin instead of OTA is simply because I don't live in the USA and I don't have an ATT Sim/network in my country. Can I still follow the dirty flash method for this? I'm just a bit afraid that since it uses a different bootloader version or maybe because of the android version difference I may go into bootloop with no way out. Has anyone tried this?
I would like to apologize if this question has been asked before. I tried scrolling through the depths of XDA forums for answers but I can't seem to find any answers. Thank you for your time!
Click to expand...
Click to collapse
Which guide did you use ?
jez17 said:
Which guide did you use ?
Click to expand...
Click to collapse
OTA and Non-OTA Firmware for N986U and N986U1
See Post #2 and #3 for the Links to the Firmware ALL of the firmware posted here can be flashed on any N986U/N986U1 Device. The firmware is NOT carrier dependent and is only listed next to some of them in order to have an idea if you might get...
forum.xda-developers.com

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