Revert SM-G900M to trade in with Samsung - Galaxy S 5 Q&A, Help & Troubleshooting

I have a SM-G900M, which I've installed a custom ROM g900mubu1cpc4 couple of years ago. Now I'm trading it in to Samsung for to get credit towards a newer phone. I see a lot of stock ROMs available, and not sure which one to choose to revert the changes that I don't remember
Is there any way to figure out which country stock ROM was originally on it? I've read technically it doesn't matter, but since it's going back to Samsung, I want to be precise.
Can someone remind me what else I need to revert the phone beside the ROM? I remember something about locking/unlocking the bootloader, but not sure if ROM would take care of everything.
Thanks!

Related

[Q] installing custom ROM on G2 [iPhone Refugee Thread]

Hello fellow XDA'ers,
I recently purchased the LG G2 and this is my first android phone. I'm coming from an iPhone 5 (for a multitude of reasons that are not applicable to this thread). I wanted to start this thread for people like myself who have no idea on how to install a ROM on an android device. There are various ROMs being released (verizon and ATT) and I would love a general walk through on how to install. Can anyone experienced point me in the right direction or offer any advice? Thanks in advance!
mjfan82 said:
Hello fellow XDA'ers,
I recently purchased the LG G2 and this is my first android phone. I'm coming from an iPhone 5 (for a multitude of reasons that are not applicable to this thread). I wanted to start this thread for people like myself who have no idea on how to install a ROM on an android device. There are various ROMs being released (verizon and ATT) and I would love a general walk through on how to install. Can anyone experienced point me in the right direction or offer any advice? Thanks in advance!
Click to expand...
Click to collapse
There aren't really any custom ROMs out for the G2 yet, just a couple of debloated ROMs (stock, plus root and minus carrier bloatware). Better ROMs will come, but it will be a little while. The G2 is just too new right now to have much out for it.
For a beginner, a few things you should keep in mind before rooting or installing a custom ROM:
* Be absolutely sure that what you're doing will work on your device before you do it. For instance, don't install a recovery image for an AT&T phone on a Verizon phone, unless you want to turn it into a paperweight.
* Read instructions carefully before you do anything. You should at least have some idea of what you're doing, so that in case something goes wrong, you'll at least have a chance of recovering. Don't just blindly follow instructions and hope you don't brick your phone.
* This *will* void your phone's warranty. If your phone dies after doing this (whether it's related to this or not), and you try to do a warranty exchange, they'll respond with something that is the same in English, Italian, and Spanish -- "No." On a related note, you are taking some risk by doing this. You could possibly mess up your phone. You could do things right, and an over-the-air update could conflict with what you've done and then mess up your phone. This is a risk you assume, not the developers of whatever you're trying to do.
* These forums, as well as #lg-g2, are for help. If you're not sure about something, ask. It's better to ask than to lose $600 because you incorrectly assumed that something would work.
Overall, rooting and ROMming your phone does give you more control. Just know what you're getting into.
antinorm said:
* This *will* void your phone's warranty. If your phone dies after doing this (whether it's related to this or not), and you try to do a warranty exchange, they'll respond with something that is the same in English, Italian, and Spanish -- "No." On a related note, you are taking some risk by doing this. You could possibly mess up your phone. You could do things right, and an over-the-air update could conflict with what you've done and then mess up your phone. This is a risk you assume, not the developers of whatever you're trying to do.
Click to expand...
Click to collapse
There is risk involved yes, but it doesn't just straight up void your warranty in every situation. Depending on the carrier you are with and their RMA process you can get a perfect replacement with no hassle every time, and the carriers that do give trouble still have a small chance of going ahead with a replacement anyway depending on the tech you get. Many times for certain hardware issues it wont matter if you are rooted or not and you can still get a replacement as well. But choosing to unlock your device and do custom software for it you do have to accept responsibility that you could do something to break you device and that is your fault, not the manufacturer.
(skips these couple sections of text for just custom recovery and ROM install)
As for specific instruction, I cant really help much there. The instructions didn't really work well for me in the TWRP thread on XDA for installing, as there is nothing available when using Goo Manager, despite what that retarded thread says. I found better info on Rootz Wiki through a Google search on what to do, and even that was a bit wrong and I had to use some common sense to do things the right way. That common sense only comes from knowing how to use the command line and knowing how ADB commands work though, someone new to the process wont know that for themselves.
Looking over this thread for the newest info it looks like pretty much everything in this video should be correct and the download link for installing root should have everything you need:
http://www.youtube.com/watch?v=Y45SXPRb31o&feature=player_embedded
http://downloads.codefi.re/thecubed/lg_g2/root/ioroot6.zip
That gets root access on your device. You may or may not even want to do that. That installs root into your ROM you are currently running (stock), but you want to install a custom ROM and your custom one probably already is rooted to begin with. What you most likely want to do is just go straight to installing the drivers to connect your phone properly and use ADB to send ("push") files to your phone, then use something called "Loki" to bypass the locked bootloader and flash a custom recover to your phone. From there you can install ROMs perfectly easily. You can follow this guide in the link, but it doesnt give you links to the phone and ADB drivers you will need:
http://rootzwiki.com/news/loki-bootloader-bypass-twrp-recovery-come-att-verizon-lg-g2/
Right now there is not really anything but Clean ROM available, which is the stock OS that has a bunch of the "bloated" and unnecessary LG and ATT system apps un-installed. It cleans things up a lot and gives you a much better experience. In the future hopefully we will see some AOSP based ROMs that have a lot of the good features like "knock on", and those ROMs will be best since they dont have any of the bloat that the LG ROM has, and the AOSP based stuff gets a lot better mods to them and offers far better customization and tweaking.
Thanks for the info! I did not know that a most ROMs come rooted. So basically, I would not need to root then install a ROM?
I have an AT&T G2 so I would be installing the Clean ROM posted in the developers section. I would love the opportunity to debloat the phone and it seems like this is the best option currently. Enigma, are you saying that the knock on and off feature does not work with this ROM?
Installing ROM
Hello everyone,
I have rooted and have TWRP with the verizon phone.
How do i move a ROM into a phone so i can install it?
I have already made a backup of the current phone with everyone and copied it to the computer.
Let me know,
Thank You
calirage2k said:
Hello everyone,
I have rooted and have TWRP with the verizon phone.
How do i move a ROM into a phone so i can install it?
I have already made a backup of the current phone with everyone and copied it to the computer.
Let me know,
Thank You
Click to expand...
Click to collapse
Put your phone in USB debugging mode under developer tools...hook up the micro usb to your phone and move the zipped ROM to the root of your internal phone storage.
calirage2k said:
Hello everyone,
I have rooted and have TWRP with the verizon phone.
How do i move a ROM into a phone so i can install it?
I have already made a backup of the current phone with everyone and copied it to the computer.
Let me know,
Thank You
Click to expand...
Click to collapse
Or enable wireless storage via the notification drop down, you can now approach your device via Wi-Fi lan and upload whatever (it makes your device into a network drive)
Sent from my LG-F320L using XDA Premium 4 mobile app

Need help with s5

So i got my beautiful Galaxy S5 from Telus and as usual with all the phones i have, i unlocked it. So far so good. Next thing was to root it and to start with custom ROMs. So I used the method described in galaxys5root.com with 100% of success. I tried couple of ROMs and i did not like it. My problems started when i decided to go back to Stock ROM from Telus. I flashed the stock rom that i found on the same site i used for rooting the phone and got a Bell phone. Now whatever i do, i am ending with Bell stock S5 and i want my Telus stock. Trying emergency recovery didn't help. I could take the phone back because i have it only for a couple of days, but i put a good screen protector (40$) and i do not want to pay for unlocking the phone again as well.
Please help me in solving my problem. Any feedback is highly appreciated:-.

[Q] Galaxy S4 SGH-i337m (Canada) rooting & flashing custom ROM

Hey everyone,
Please bare with me, this is my first time rooting & flashing a smartphone, so my knowledge on the topic is still limited even after some reads.
I also have the "misfortune" to not fall into the (apparent) easier route of having a non-Canadian Galaxy S4 where the model starts with "i950.." but mine being SGM-i337m. From what I've understood, the only reliable method I could use would be CF-Root, as described in this thread (OP's post), although the thing that bugs me, because I'd like to be able to install whatever ROM I'd like, is the line that says "[..] and those who want to keep as close to stock as possible. CF-Root is meant to be used in combination with stock Samsung firmwares [..]".
Also, which might be worth mentioning, my best bet is I'll probably end up flashing Cyanogenmod's ROM and they seem to have packaged installers, but I'm still worried it might not cover my model (if I take that route instead of rooting using CF-Root). From CGM's wiki under Supported Devices, there's a list that includes "jfltecan" (code name) for Canada, but I'm still hesitant. Do you guys think it covers Koodo (service provider) which I believe is owned by Telus (another SP) ? The last thing I want to do is brick my phone or have it unusable at the booting stage or whatever. And I don't mind reading, so any helpful links which covers this specifically would much be appreciated, although I don't mind an all cooked answer
Thanks

S4 i9505 Orange need to flash US AT&T rom

Hello!
I bought my mom an inexpensive S4 and it came with Orange wireless service provider and it's in French out for the box.
It's having some problem suck as MMS issues and all that, not to mention it's just being a pain in the butt to work with.
I want to flash the stock AT&T ROM to it ASAP so she will stop yelling at me about it, but I can't seem to find a copy around here. Maybe I'm just looking in the wrong areas, but I would appreciate some help locating it, thanks!
Also, it's been a while since I have done any ROM changes, so maybe showing me how they do it now would be helpful as well, thanks.
-Dave M.
AT&T ROMs cannot be installed on your phone. Odin will reject it at best, and you could hard brick the S4.
Unlock the phone by using the service menu exploit, RegionLock Away, or by purchasing an unlock code. Once the S4 is unlocked, you can install an unbranded firmware in place of the Orange-branded firmware. Keep in mind that this phone will never get LTE in the states as the frequencies are different.
Yes, I was made aware of the no 4G, no LTE issue with using a European phone by the guy who didn't know what he was doing when he programmed in the wrong APN settings at the AT&T corporate store...
Supposedly, the company I bought it off said this phone was unlocked already, so what then? It's been about 2 years since I did anything with ROMs, so I might be a little out of the know about the new stuff, thanks.
If it's already unlocked, then you can install any I9505 stock ROM you want. Download this ROM from Sammobile and follow the instructions on that page to install it. It's UK firmware so at the language prompt it will default to English. Be aware that you may have to flash the ROM twice before the S4's wireless radios function properly.
If everything goes as expected the APN should be automatically set. If not there are tutorials all over the place on adding an APN.
EDIT: Download the drivers from Samsung's website if not included in the Odin download on Sammobile. You'll need to have them installed for Odin to function.
Thanks. Now, how can I check to make sure this one is unlocked? Service mode is weird, because I had to do the Q followed by 0000 in key input to get it to give me the menu...
Put your Mom's AT&T SIM into the phone. If it asks for an unlock code then the S4 is still carrier locked.
Oh, okay. It's been working for like 2 months like this, lol.
Aren't there still a few carriers that aren't blocked for other regions? I just want to be sure, absolutely. I just want to know if there's another way to check.
Since it was Orange by origin (and those guys tend to lock stuff) I would say you would NOT be able to run AT&T on it as well (Orange ONLY lock - not really region lock)
When you say AT&T works I would assume previous owner already did what was needed and unlocked this device.
Sounds solid, thanks a bunch, fellas.
I just really wish there were a touchwiz ROM from AT&T for this particular model...
No, no you don't. If anything, you have it far easier by not having AT&T firmware. Unless of course you happen to LIKE encrypted (i.e. locked) bootloaders. AT&T and Verizon lock their bootloaders, which makes the simple things like rooting, bloatware removal, and custom ROMs far more difficult, and in some cases bordering on the impossible.
Your Mom may not give a damn, but by not having to deal with the headache of a locked bootloader you've made your life easier.
I've dealt with several so-called finished custom roms, such as the likes of such as Cyanogenmod and others, and lets just say they aren't quite as solid as the stuff that the phone comes with.
There's always something that doesn't work like it's supposed to or some important app that won't work somehow. Last time, I went with a stock rom, custom recovery (I like TWRP) and rooted the device and it ran just like I wanted. SO yeah, I'd like to use a stock touchwiz rom for the US if it's available somewhere.
I understand not wanting to toss a custom ROM on the phone, but that wasn't the point of my post. The ROM I prompted you to download several posts upthread is a stock Touchwiz ROM. In fact, up until this morning it was the same ROM I was using on my O2 I9505 that I'm using here in the US. As the I9505 is not available and never will be available from a carrier in the United States, there will never be a US ROM available for this phone. The ROM I had you download, unlike the AT&T ROM, has no carrier branding of any kind, no carrier bloatware, and no locked bootloader. As a result, you don't have the carrier meddling around with the ROM and making the experience worse by having crud added.
My point is, bluntly, that you're far better off now than you would be with an AT&T device. So, hopefully, now that you got everything sorted out your Mom can enjoy the phone.

[Q] Restoring to Stock ROM

I don't always ask for help online because I believe that whatever problem I have, someone out there already has it, so I just need to look better. Not this time though. I'm literally dying.
I've installed Custom ROMs before and reverted them back to stock before but it was on a Galaxy NEXUS. It was seamless.
I have a n900W8 Note 3, this is the canadian variant. After a long day, I managed to root it and install CWM recovery, but didn't install a custom ROM. The next day (today), I installed an AOSP ROM and it worked fine but I wanted a TouchWiz ROM. After trying out 2 and getting stuck in a bootloop, I went back to the AOSP ROM. I then tried one last one, X-NOTE. Apparently it wiped my internal storage. You should see what happened to me when I realized that.
So I now just want to go back to the stock firmware but that's not easy, because I live in Jordan, which is in the middle east, but my phone is a canadian variant. But, The CSC Code for it was TTT, which is for Trinidad and Tobago. Wait, there's more. When Installing X-Note, it asked me which CSC code do I want to install. it had 5 options I think and TTT wasn't one of them. I chose BTU which is for UK.
So now I want a firmware that isn't carrier locked so I can use whatever SIM Card I put in it.
There's this article, and it says :
"You might find 2 types of firmwares even within a particular model number. Such firmwares are generally known as Branded and Unbranded ones. If your device is locked to a network provider/carrier, it’s a branded device. Therefore you must install a firmware that is meant for your carrier. Similarly, if you are able to use any SIM card on your phone, it’s unbranded, and so you can install any firmware on it that is for unbranded Note 3.", well, how the hell do I know which one is branded and which one isn't :crying:.
Seriously guys, I'm desperate for help. The phone actually isn't mine, that's why I'm freaking out. I still have my Galaxy Nexus and I love it. Even after 3 years, it is still working perfectly. The developer support for it is absolutely amazing.

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