yashsingh1/xdaforums huggingface dataset:
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] dawgdoc:
If CWM will work with the zip then TWRP should work as well, so would Philz Recovery. You may wish to test the zip you created to insure it works. I don't know details about signed files and and if changing out the modem file will alter the zip verification.

(When I extracted a stock recovery from a ROM image I actually installed it with fastboot instead of using a custom recovery to flash it. )
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] Kwijybow:
What do you mean, test it? Try to install the same modem over top of the already installed modem? Or is there another way to test it?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] dawgdoc:
Yes, I was thinking of testing that the file would install correctly. I realize that it would be over the top of the same modem, but you would know if the zip file was working. The downside is that if it is not working but corrupted the currently installed modem you would have to reflash the stock ROM, unless someone else chimes in with a working modem zip.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] Kwijybow:
Ok, I will be daring and try the modem in a day or two. I need my phone working right now so cant experiment too much today. lol.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] dawgdoc:
:good: I understand completely. I am putting off until my next day off some changes to my phone.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] zetsui:
How do I know which modem my phone shipped with, anyone? Need to know ASAP need a new phone if my GPS isn't fixed
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] dawgdoc:
If you check Settings > About Device > Baseband Version. You should have your answer.

Two more exact ways to check are with the Phone Info *Samsung* app from the PlayStore or using this Terminal Emulator command

getprop | grep version.baseband
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] zetsui:
does that give the native baseband or the one i flashed it with? I was under the imperssion it was the latter
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] dawgdoc:
Sorry, I misread your earlier question. All of the methods I mentioned show what is currently installed on your phone.

Off the top of my head the only way I know to determine what your phone shipped with would be if you had a nandroid backup, made after installing a custom recovery, to examine. Even then, if you had taken any OTA updates, it would not show what the phone shipped with.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] zetsui:
so you'resaying the natural progression is just to install the latest modem?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] dawgdoc:
Until now I, personally, haven't been flashing the latest modem or bootloader. As long as what was installed was working with the ROM I was running, I didn't upgrade. That will be changing due to the Stagefright scare. I will soon be on NJ2.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] zetsui:
That's sprint. Do people typically upgrade with a custom ROM? What would be the purpose of that? Just to keep stock rom updated but root?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] dawgdoc:
I don't know if there is a typical.

Some will update whenever a new stock rom comes out. This is easy if you stay on the stock rom, you simply take the OTA. It is a bit more difficult if you are on a custom rom. You either revert back to stock or wait until someone posts the bootloader/modem file.

The only reason to upgrade bootloader and modem while on a custom ROM, in my opinion, is if the new release fixes something that is broken for you. Some do this hoping the new modem will give them better reception. I don't believe the Stagefright fixes are in the bootloader. But I doubt the older ROM I am running will be updated. The newer ROMs that will update to include the fixes all require newer bootloaders and modems than I am running, therefore the need to upgrade.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] zetsui:
This has confused me over two years. I understand that the modem can be flashed and updated, same iwth rom, but how the hell do you update your bootloader? Unlesss I'm mistaken I always thought it was updated with the modem
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] dawgdoc:
The safest answer to give a person these days is to flash the bootloader and modem together. The reason is that since 4.4.x the bootloader and modem versions must match or there is a strong probability of a soft brick. For 4.3 and earlier it was not necessary for the bootloader and modem versions to match. I am running the MJ2 bootloader and MJB modem, both are from 4.3 ROMs. The MJ2 is the unofficial version leaked before AT&T released MJB. The MJ2 bootloader is downgradeable, MJB is not. DO NOT downgrade any bootloader released after MJ2.

Depending on where you look you can find flashable files of only the modems or of the modems and bootloaders together. As far as that goes, if you have a stock ROM you can extract the modem or bootloader, depending on what you need. Official stock ROMs will contain the bootloader and modem. Custom ROMs, whether TouchWiz, CM, or AOSP, almost never have a bootloader or modem baked into the ROM. The only exceptions I have seen are some stock TW roms released by enewman17 designed to restore an SGS3 to a stock state with the exception of being rooted. You can find his downloads here.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] zetsui:
In this thread though they are packaged together though right?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] dawgdoc:
The filenames for the modems in the first post of the thread we are in only mentions the modems. I hadn't checked until today to see if that was correct or a misname. I just downloaded two of them for the i747U, LEM and MJB, opened the zips and saw that each only contained the modem and not the bootloader. So, the files are named correctly.

In the page I linked the files contain both bootloader and modem, and are named to indicate this.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] zetsui:
Three years on this forum and I'm just learning this. My God no wonder my lollipop updates felt like thiss. Poorly documented for those who read even! Will get back to you on how the bootloader update worked

Have the mjb most recently modem going to try and flash the I747UCUEMJB_2024954_REV04_user_low_ship.tar.md5.zip

When I tried to update to lollipop even with MJB working, my GPS would never work, and while driving my navigation was all over the place, switching rouutes, not udpating time, local routes etc.

EDIT: well I apparently hardbricked my s3 after 3 years....What what wrong here? I was under the impression for lollipop to work properly you needed n updated bootloader and I updated it using Odin to the most recent one. It rebooted. I saw the Galaxy S3 screen, but it shut off after that and I can't boot it up :(?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] zetsui:
ps WHERED YOU get that DL link from, is there an original thread that referenced it?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] dawgdoc:
Since you saw the S3 screen you are probably only soft bricked, not hard bricked. That's a good thing.

I scanned back over the last couple of pages of posts and did not see any mention of what bootloader and modem you were running before attempting flashing anything in the past two days.

1) Do you recall what version bootloader and modem you were on?

2) You mention using Odin to flash, what exactly did you flash?

3) do you have an i747 or an i747M

For the i747M there are stock ROMs available with the current bootloader and modem. For the i747 the last full ROM released was for 4.1.1, the LK3 version. If you have an i747 and you tried to flash the LK3 ROM I suspect that was a downgrade for you. Flashing a stock ROM with the same bootloader and modem version you were last running successfully should solve your ills.

The link was derived from one of enewman17's posts. He has made it available in the OP of several of his stock ROM images. I pulled this one from his NJ2 ROM. All of his files are for the i747. (Well, a few may be for the T999, T-Mobile's version of the SGS3.)
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] zetsui:
I saw it initially but then it just shut off after that> I can't get into download mode. I bricked two SGS3 today :(

1st SG3 I was I747UCDLK3 upgraded in TWRP without rebooting each modem and bootloader up to NJ1, it booted into Pac, it booted, but when I reset it to do the same to NJ2, it wouldn't turn on?

2nd SG3 put this in PDA (istead of bootloader, atlhough I'm sure I should have PDA'd this) I747UCUEMJB_2024954_REV04_user_low_ship.tar.md5.zip. Was on I747UCALG1 initially

Both won't boot (black screen) but oddly enough will here the USB noise on windows when I plug them in. Just nothing to see on screen and no USB drive shows up in my computer.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] taqi110:
Hello,

I have Samsung S3 i747 ATT with Android 4.3

I have tried almost all modem listed above under i747 with odin but it fails no matter what.

I tried different versions of odin as well but nothing worked

I want to flash my modem because it is not working properly.

Kindly please help.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] dawgdoc:
Please do not quote the entire original post (OP) when asking a question, it tends to be annoying.

You need to use the modem that matches your bootloader. Odin will automatically fail if you are trying to flash a modem of an older version than your bootloader if has the potential to brick your device, once you are on 4.3 or newer. I said you had the i747, I take that to mean you are on the MJB bootlaoder.

You should check your bootloader version before trying to flash anything else. There is a Playstore App, Phone Info *Samsung* the dev is vndnguyen. The other way to check is with a terminal emulator command. Terminal Emulator can be an installed app or an integral part of custom recoveries such as TWRP. The commands to determine bootloader and modem versions are:

getprop ro.bootloader
getprop | grep version.baseband

Please post back with both versions so we can give you accurate guidance.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] taqi110:
Thank you for your reply, I wont quote the entire post again sorry about that.

Like you said I installed the App Phone Info Samsung and inside Firmware section my bootloader version is i747UCUEMJB.

My baseband version is also the same.

I'm trying to flash this modem, becuase it is not functioning properly, it keeps loosing connection with GSM Network, although the signal bars show full strength but neither I'm able to make a call nor able to receive. The only way to make it working is by putting the phone in airplane mode and than put it to normal. This way I get signal and connectivity but after some times I encounter the same issue but mobile show full signal strength.

I tried to put the same sim in other mobile and it worked without any issue signal issues.

So yesterday I also installed CWM recoveryin my mobile and tried to flash the modems which I talked about in my earlier post, although all of them installed succesfully but after reboot my IMEI got null and I wasn't able to make call nor able to switch on WIFI. the only modem worked was i747UCUEMJB which is the default one came with my mobile still im having the same issue of signal loss.

I can provide more information about my mobile if you need.

Kindly Help

Thanks
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] dawgdoc:
If you are still running the stock 4.3 rom I would expect that the MJB bootloader and modem, which are from the 4.3 release, would work. If you are using a newer ROM it isn't unexpected for you to have problems.

If you are wishing to remain on stock I would suggest reflashing the entire stock ROM as a clean flash: wiping cache, dalvik-cache, and data. There were recovery flashable zips released by a few in either the development or general sub-forum. If that doesn't solve the problem my next suggestion would be to go to a newer bootloader and modem. AT&T released three KitKat updates. The first was the NE4 release. eneman17 has recovery flashable zips in the forums.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] taqi110:
Hello one thing I noticed that my mobile keep changing the cell tower, this I find out by using an app called Network Signal Info.

While I was able to make calls I noted the cell value as

Cell 20248

LAC 59913

Then suddenly Cell value got changed , And I was not able to make calls, and than it keeps toggling between these 2 values

Does this indicate something ?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] majikfox:
Maybe use a file host that doesn't use a bunch of fake download buttons to try to get you to install malware.

---------- Post added at 02:14 PM ---------- Previous post was at 02:13 PM ----------

It indicates that you're paranoid.

Phones change cell towers frequently, especially if you're in an area where you're in between two or more of them.

It was never a problem before you started watching it...
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] taqi110:
OK than it should do the same on all mobile, I also tested this on my Moto X and it wasn't changing the Cell ID.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] dawgdoc:
Not really. It's not at all unusual for two devices not to receive exactly the same. It is not uncommon for two people with different phones to be standing side by side and have varying strength of reception. The antennae are not the same, the chipsets are not the same, and firmware and software vary.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] ronpelayo:
Is it recommended to update my modem to 2015-09-24 4.4.2 I747MVLUFOB3? I'm currently on 2015-02-04 4.4.2 I747MVLUFOB1 and using OctOS 5.1.1 rom but based on this site http://samsung-updates.com/device/?id=SGH-I747M FOB3 is the latest. If so how can I update it to FOB3? Thanks in advance guys :)

EDIT: Can I install any of the regions in the list?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] Hw4ng3r:
I was running OctOS 5 and now Marshmallow on firmware that is even older than OB1. If you don't have any issues with it now, you don't have to update to OB3.

If you really want to, you'll have to Odin flash the stock firmware and no you should not install any region; should be specific to your carrier.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] deathblade:
OK question its been a while sine I've done anything with a Samsung phone (aside update my s3 to latest vanir build) my gf has an s3 Att that has lk3 android version 4.1.1 can I update the modem to say the newest version and not update the rom? With no issues? I know each phone is different and there maybe issues with flashing one on hers where mine or someone else's may not but aside from that are the modems ROM version dependent?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] canodroid15:
Well, on your gf's phone do you plan to stay on stock ROM or update to a custom rom? LK3 is old & you'll have to update incrementally to get to the latest bootloader & modem. The bootloader & modem have to match on d2att & you can't skip versions or you'll brick the phone. Its not hard to do you just have to do it carefully or you could brick it. We all know what happens when the gf's phone gets bricked lol :eek: :p
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] dawgdoc:
I have seen reports of people running older ROMs on newer firmware and modems. But, I have also seen reports from others of wifi/bluetooth issues when trying to do so. An important thing to keep in mind is that you are on a 4.4.2 modem its version and the bootloader version must match. That is: if you upgrade past the 4.3 (MJB) modem you must also upgrade the bootloader. The 4.4.2 bootloader/modem versions are NE4, NJ1, and NJ2. The 4.1.1 ROM on her phone was the last full release by AT&T, all since then have been OTA patches. This causes us to need to upgrade sequentially. In other words don't skip a version. (The i747M users can, we can't.)

Before you begin the process, there is a free sim/carrier unlock that can be found in the forums. To do this you must be on the 4.1.1 stock dialer, and possibly modem. If you don't do it now, it can't be done once on the 4.3 or newer modem. This means you would have to receive an unlock code from AT&T, and implement it on a stock ROM, because you can not downgrade from 4.3 bootloader and modem to use the free method. (You may not have a need for this unlock, but it easier to do than wish you had done so.)

ADDITION: One reason to update to a newer ROM is the addition of the fix for the StageFright scare.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] canodroid15:
[MENTION=5575315]dawgdoc[/MENTION] always puts it best lol, right on brother! ;) :thumbup:
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] dawgdoc:
I appreciate the props. :highfive:
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] deathblade:
Yeah I personally would love to unlock her phone and install a custom ROM on it, but she likes it where it is, the only issues she's had it signal being "eh" so that's the reason for my question, also I'm fully aware of the unlocking method, I plan on putting my s3 back to 4.1.1 stock to unlock it, I do appreciate the detailed answer thank you
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] dawgdoc:
Since she is wanting to leave it at 4.1.1, the best you could do is one of the 4.3 modems. You could definitely try the trial release of 4.3 - the MJ2 modem. From it you can always revert if it does not play friendly with the 4.1.1 rom. The modem of official 4.3 release (MJB) will also let you revert if it does not play friendly with the 4.1.1 ROM. BUT be sure when you install the MJB modem you DO NOT use the MJB bootloader. I mixed the MJ2 bootloader and MJB modem for months with a 4.3 custom TW ROM and had no problems. I mention this because you can revert back to 4.1.1 from the MJ2/MJB combo, giving you a couple of options to try while on the 4.1.1 (LK3) ROM: LK3 bootloader and MJ2 modem, LK3 bootloader and MJB modem, MJ2 bootloader and modem. All of which can be put back to LK3 bootloader and modem if the changes do not play well with the LK3 rom. I downgraded from the MJ2/MJB combo to 4.1.1 and later upgraded again. If you are going to try any of this, make sure you have all of the files on hand before starting. :)
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] dstruct2k:
The I747 and I747M (Modem?) use different radio hardware. That's the only difference between the hardware that I know of, but it means we can't share modem software between the devices. It's equivalent to 2 PCs, identical in every way except one has an ATI card and the other nVidia, and you figure "ATI just updated their drivers, let's try the ATI driver on my nVidia card. The rest of the PC is the same, right?"
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] answer1o1:
Is there a way to revert back to the stock modem without having the Nandroid? And every time we flash a different ROM the modem doesn't change correct?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] unit_vector:
I am on Telus and have flashed the new Canadian modem and it is working great so far. LTE is faster than before and no apparent bad side effects.

Any chance someone can create a flashable zip or Odin tar of the previous Canadian modem (LE8 firmware) and add it to this thread? For emergencies and for comparison, so that we don't have to re-flash the previous complete stock firmware with Odin to get it back. Someone posted one in the developer forum claiming to be it, but I'm fairly certain it is not valid. Several people mentioned that it seems questionable, and I risked flashing it myself after installing this new modem to test and it did not revert the modem at all. Whatever it is it is not the LE8 modem.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] dstruct2k:
Which carrier?

Correct.

Sent from my SAMSUNG-SGH-I747
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] answer1o1:
AT&T
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] unit_vector:
Also, restoring an old Nandroid does not restore the modem from that version, correct? I'm pretty sure the modem is stored in a separate space than the areas covered by the Nandroid. I restored from an old rooted stock backup I had and it seemed to keep the new modem I just flashed.

Making a Nandroid before flashing anything is always a good idea, The OP seems to imply that you can restore your previous modem if you back up first, but if this is true, then you can not, and the only way to recover the previous modem is by flashing the old modem or flashing stock through Odin.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] answer1o1:
The reason I ask is because I flashed a modem a few weeks ago and I've noticed my GPS is basically shot. I dunno if the modem has anything to do with the GPS though..?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] dstruct2k:
Yes, the modem will affect the GPS. Being on AT&T, you have a couple modems to choose from, so try one of the other versions posted.

And no, a nandroid doesn't capture the modem firmware.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] meleii:
I will see what I can do about the le8 modem. I may need someone to pull some files for me.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] HappyPlato:
Thanks for the post. I updated my Rogers phone. Everything appears to be working fine.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] dstruct2k:
That file was the boot partition. I tried telling the OP in that thread that he posted the wrong partition. I have a copy of the stock modem that I will post when I get to work.

Sent from my SAMSUNG-SGH-I747

---------- Post added at 09:26 AM ---------- Previous post was at 08:41 AM ----------

Uploaded: modem_CWM_I747MVLLE8.zip

(Yes, I made it CWM flashable :))

This is the stock modem that shipped with all Canadian I747Ms.

If someone would like to reupload this to somewhere other than my Dropbox, I'd be very grateful. EDIT: Uploaded to d-h.st, link changed.

THIS MODEM IS FOR

I747M

MODELS ONLY! NOT AT&T!
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] pimpnmaxima:
LH1 Works nicely for me on AT&T in Dallas with KToonz Kernel
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] unit_vector:
Awesome! Thanks for your help dstruct2k!
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] dstruct2k:
No problem, I did a byte-for-byte rip of my entire device on the day I got it, immediately after rooting. I knew it would come in handy at some point. I used it to fix a lost IMEI once already too. :)

Sent from my SAMSUNG-SGH-I747
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] meleii:
I uploaded your zip to d-h.st and linked in op. Ty
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] dstruct2k:
No problem. :)

I noticed that your Tapatalk signature lists your device as an I747M, I would assume that's just because CM10/AOKP (and all derivative ROMs) don't properly differentiate between the slight variations? Or are you using a Canadian SGS3 on AT&T?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] meleii:
No, last night I flashed the Canadian leak on my att variant.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] sicmadek:
which lh1?
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] dstruct2k:
The AT&T one, obviously. If you flash the wrong one, you'll have no service, and possibly lose your IMEI.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] cirusnb:
Just curious if any has extracted the modem from the Canadian JB leak from sammobile? Is it different? And do these modems have a change log somewhere? Always wanted to ask.
[AT&T, Rogers, Bell, Telus Samsung Galaxy S III] ridwanism:
hi guys, i just got s3 sgh t999l(t-mobile), im in indonesia. my problem is the signal always on at E, i never got 3g, and 4g. i have check the supported band of the s3 and the provider that i used also use one of the supported band. but why i cant get 3g/4g signal in my country? i would like to flash the modem file, would it fix my problem? thanks before for your answer, and sorry for my bad english :)