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[Q] If I have VRBMB1 can I flash a rom that is VRBMF1?

Sorry, I'm a total noob. I don't really understand how the "Baseband Version" factors into the ROM/phone operation. Can someone explain it? I have a pretty good understanding of computers but when it comes to the phone it seems very black-boxy -- I'm still learning. My underlying question is:
The BoneStock ROM says: "BoneStock v3.0 (VRBMF1) 6/23/13", my phone currently has VRBMB1. Can I flash the BoneStock ROM on my phone or do I need to upgrade the Baseband Version somehow before I do that? I saw links to different revisions on the BoneStock thread but there isn't a whole lot of explanation about how to use them.
Thanks,
-Greg

Yes No problems. I ran mb1 on bonestock.
Sent from my SCH-I535 using xda premium

bbqsfire said:
Yes No problems. I ran mb1 on bonestock.
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Cool, do you know what the Baseband firmware does? Should I flash my firmware to VRBMF1?

I flashed mine mf1 because it really did help signal and data speeds. In my opinion it is worth it to flash the mf1
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bbqsfire said:
I flashed mine mf1 because it really did help signal and data speeds. In my opinion it is worth it to flash the mf1
Click to expand...
Click to collapse
Did you flash it before flashing BoneStock or does it matter what the order is?

Modem has no relation to what ROM you are on. You can flash whichever you want first, doesn't matter.
Sent from my SCH-I535 using Tapatalk 4 Beta

Hi, please PM me MB1 and MF1.
Thanks,

Baseband update

Just have a quick question. I'm not really all up to date with how the radios work but the new I535VRUCML1 is abler to be flashed I'm on 1535vrbmf1. If I flash the new radio will I still be able to use 4.1.2 roms or only be able to use 4.3?

It would be wise to stay on the MF1 baseband until you decide you want a 4.3 TW ROM. I Was on an AOSP 4.4 ROM with MF1 and had no problems.

bsannes said:
Just have a quick question. I'm not really all up to date with how the radios work but the new I535VRUCML1 is abler to be flashed I'm on 1535vrbmf1. If I flash the new radio will I still be able to use 4.1.2 roms or only be able to use 4.3?
Click to expand...
Click to collapse
You cannot be on anything older than a 4.3 ROM with the ML1 radio... you WILL brick.
There is a ML1 radio available for download and all you have to do is flash it in recovery. But like I said, you must be on a 4.3-4.4 based ROM to flash it without bricking.
Sent from my SCH-I535 using xda app-developers app

Ok great thank you. So if I try a 4.3 ROM and decide to go back to 4.1 or restore my ROM I should also flash the old mf1.
Sent from my SCH-I535 using Tapatalk

RBarnett09 said:
You cannot be on anything older than a 4.3 ROM with the ML1 radio... you WILL brick.
There is a ML1 radio available for download and all you have to do is flash it in recovery. But like I said, you must be on a 4.3-4.4 based ROM to flash it without bricking.
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That's not true, at least not for all phones. I flashed the ML1 radio while running a 4.1.2 Touchwiz ROM and everything worked fine. My signal and data speeds seemed worse than on the MF1 radio though, so I flashed back.

bsannes said:
Ok great thank you. So if I try a 4.3 ROM and decide to go back to 4.1 or restore my ROM I should also flash the old mf1.
Sent from my SCH-I535 using Tapatalk
Click to expand...
Click to collapse
Correct.
Here's the link for ML1:
http://invisiblek.org/sch-i535/modems/d2vzw_ML1_modem.zip
Jacquestrapp said:
That's not true, at least not for all phones. I flashed the ML1 radio while running a 4.1.2 Touchwiz ROM and everything worked fine. My signal and data speeds seemed worse than on the MF1 radio though, so I flashed back.
Click to expand...
Click to collapse
I could be wrong but from what I've read, many people must be extra careful about what radios they flash and when... especially with ML1... for some reason.
Sent from my SCH-I535 using xda app-developers app

Ml1 radio will work fine on any rom you run. If you took the OTA update, then you are unable to flash any radios since you have the entire ML1 firmware. The bootloader needs every part of the firmware in order to boot.
Since the flashable zip is only the radio for ML1, there's no danger of this doing any harm or bricking your phone. People have reported much better signal strength when using the ML1 radio with the MF1 firmware on 4.3 roms. I would stay on MF1 if using a 4.1.2 rom. I'm actually still using MB1.
Sent from my SCH-I535 using Tapatalk 2
---------- Post added at 12:10 PM ---------- Previous post was at 11:56 AM ----------
RBarnett09 said:
I could be wrong but from what I've read, many people must be extra careful about what radios they flash and when... especially with ML1... for some reason.
Sent from my SCH-I535 using xda app-developers app
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You're mostly right, if you flash the entire ML1 firmware you will brick, and that will cause problems when you run a 4.1.2 rom. Flashing the modem only has no bad effects except for possibly decreased signal strength.
Sent from my SCH-I535 using Tapatalk 2

BadUsername said:
You're mostly right, if you flash the entire ML1 firmware you will brick, and that will cause problems when you run a 4.1.2 rom. Flashing the modem only has no bad effects except for possibly decreased signal strength.
Sent from my SCH-I535 using Tapatalk 2
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Thanks for the extra info man.
You're a lot of help, even the other day.
Do you think ML1 would be any better for me than MR1 on an AOSP 4.4 ROM?
Sent from my SCH-I535 using xda app-developers app

RBarnett09 said:
Thanks for the extra info man.
You're a lot of help, even the other day.
Do you think ML1 would be any better for me than MR1 on an AOSP 4.4 ROM?
Sent from my SCH-I535 using xda app-developers app
Click to expand...
Click to collapse
It's possible, but you aren't going to do any harm testing it out.
Sent from my SCH-I535 using Tapatalk 2

RBarnett09 said:
Thanks for the extra info man.
You're a lot of help, even the other day.
Do you think ML1 would be any better for me than MR1 on an AOSP 4.4 ROM?
Sent from my SCH-I535 using xda app-developers app
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Click to collapse
BadUsername said:
It's possible, but you aren't going to do any harm testing it out.
Sent from my SCH-I535 using Tapatalk 2
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Click to collapse
VRUCML1 should work a little better on AOSP than VRBMF1 so long as it includes commits like this

What rom/modem has the best reception now?

I'm running SlimRom 1.9 (AOSP 4.3 not KitKat) with the MF1 modem. I live in an area with somewhat poor reception, so data speeds are very low in my apartment. But recently I've been getting too many dropped calls, nearly every call has problems.
What are my best options at this point?
1. update to ML1 modem (not firmware) and keep using AOSP
2. switch to 4.3 TW rom and ML1
Any other things to try?

ECrispy said:
I'm running SlimRom 1.9 (AOSP 4.3 not KitKat) with the MF1 modem. I live in an area with somewhat poor reception, so data speeds are very low in my apartment. But recently I've been getting too many dropped calls, nearly every call has problems.
What are my best options at this point?
1. update to ML1 modem (not firmware) and keep using AOSP
2. switch to 4.3 TW rom and ML1
Any other things to try?
Click to expand...
Click to collapse
Try both, see which you like better.
Sent from my SCH-I535 using Tapatalk 2

BadUsername said:
Try both, see which you like better.
Sent from my SCH-I535 using Tapatalk 2
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Concerned about losing root etc if I go to 4.3

ECrispy said:
Concerned about losing root etc if I go to 4.3
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You won't.
As long as you flash the ml1 modem you'll have no issues at all. Just don't flash anything that says ml1 firmware or ml1 ota stock rom.
Sent from my SCH-I535 using Tapatalk 2

[Q] carbonROM baseband modem help

Can anyone please tell me whether CM-based ROMs like Carbon automatically update your baseband modem? I'm currently running the 5/15 nightly with ML1 modem and am wondering if I need to update my modem? Yesterday my radio system started acting really odd - my data connection completely dropped out for about an hour. When it came back I could only get 1x or 3G connections, but no 4GLTE. I am pretty sure it isn't location related, I generally get a good connection in the city (Portland, OR). All getting slow connection. Any suggestions would be greatly appreciated. Thanks in advance.

bdyer said:
Can anyone please tell me whether CM-based ROMs like Carbon automatically update your baseband modem? I'm currently running the 5/15 nightly with ML1 modem and am wondering if I need to update my modem? Yesterday my radio system started acting really odd - my data connection completely dropped out for about an hour. When it came back I could only get 1x or 3G connections, but no 4GLTE. I am pretty sure it isn't location related, I generally get a good connection in the city (Portland, OR). All getting slow connection. Any suggestions would be greatly appreciated. Thanks in advance.
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ROMs do not change or update your baseband unless you are flashing a full ODIN image or taking an OTA. Modems have to be changed or updated separately and by you when you flash ROMs.
Different modems perform at different levels depending on the individual device and area where you live. Best thing to do is flash different modems, try each one for a few days, and test which one works best for you.
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landshark68 said:
ROMs do not change or update your baseband unless you are flashing a full ODIN image or taking an OTA. Modems have to be changed or updated separately and by you when you flash ROMs.
Sent from the Shark Tank using XDA Premium 4 mobile app
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Thanks for the reply, I really appreciate it. If it's not too much trouble, could you tell me what version I should be using and where to get a flashable image? Thanks in advance.

bdyer said:
Thanks for the reply, I really appreciate it. If it's not too much trouble, could you tell me what version I should be using and where to get a flashable image? Thanks in advance.
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Second to last page of this thread, post #1245:
http://forum.xda-developers.com/showthread.php?t=1788313
[FIRMWARE] <I535VRUCML1> (MODEM/RPM/TZ/SBL) Verizon SGS3 (SCH-I535)
You will have to figure out which one you should be using by trying different ones and gauging the results.
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MMS APNs?

For some reason if I'm on wifi MMS doesn't download and even when I'm off of it and on LTE it doesn't download. I'm almost certain I have all of the Verizon APNs but something is telling me I don't. Can someone post the MMS APNs? I'm on Paranoid Android 4.6 Beta 5

DubleJayJ said:
For some reason if I'm on wifi MMS doesn't download and even when I'm off of it and on LTE it doesn't download. I'm almost certain I have all of the Verizon APNs but something is telling me I don't. Can someone post the MMS APNs? I'm on Paranoid Android 4.6 Beta 5
Click to expand...
Click to collapse
I was having those issues a few weeks ago too, but on a different ROM. I don't know what fixed it, unfortunately.
Are you using your main VZW number or a Google Voice number? What firmware & modem are you using?

MrBrady said:
I was having those issues a few weeks ago too, but on a different ROM. I don't know what fixed it, unfortunately.
Are you using your main VZW number or a Google Voice number? What firmware & modem are you using?
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Main VZW number. As for modem I'm assuming you mean baseband, which is I535VRBMF1.

DubleJayJ said:
Main VZW number. As for modem I'm assuming you mean baseband, which is I535VRBMF1.
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Click to collapse
The rest of the firmware is probably MF1 as well then.
You can always try upgrading your modem (only modem, not firmware) to ML1 or NE1. If you have an ad blocker installed, unblock and uninstall. That's been reported to get in the way of MMS sometimes.
I just saw this APN.xml posted in another thread. It's for VZW.
https://www.dropbox.com/s/b9zatl31s5d6237/apns-conf.xml?dl=0

MrBrady said:
The rest of the firmware is probably MF1 as well then.
You can always try upgrading your modem (only modem, not firmware) to ML1 or NE1. If you have an ad blocker installed, unblock and uninstall. That's been reported to get in the way of MMS sometimes.
I just saw this APN.xml posted in another thread. It's for VZW.
https://www.dropbox.com/s/b9zatl31s5d6237/apns-conf.xml?dl=0
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Click to collapse
So just flash the ML1 modem zip at the bottom of this post(http://forum.xda-developers.com/showthread.php?p=29134924)?
The link in that post isn't working however I found a mirrored one on Reddit and it *appears* to be the same.
https://www.androidfilehost.com/?fid=23329332407591786 (OP: http://www.reddit.com/r/cyanogenmod/comments/25vamv/lost_lte_on_verizon_samsung_gs3_since_cm11/ )

DubleJayJ said:
So just flash the ML1 modem zip at the bottom of this post(http://forum.xda-developers.com/showthread.php?p=29134924)?
The link in that post isn't working however I found a mirrored one on Reddit and it *appears* to be the same.
https://www.androidfilehost.com/?fid=23329332407591786 (OP: http://www.reddit.com/r/cyanogenmod/comments/25vamv/lost_lte_on_verizon_samsung_gs3_since_cm11/ )
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Click to collapse
That'll bump your modem up to ML1 which was taken from the locked-bootloader Android 4.3-based firmware. If you want to take it a step further, you can download the NE1 modem, which was taken from the locked-bootloader Android 4.4.2-based firmware. It seems like each phone responds a little differently. Some people say stick with ML1, some prefer NE1. Personally, I don't notice much of a difference except with NE1, it seems to stay in 3G more when coverage is low, before jumping back to 4G. I would guess it does that to save battery by sticking to the strongest signal.

MrBrady said:
That'll bump your modem up to ML1 which was taken from the locked-bootloader Android 4.3-based firmware. If you want to take it a step further, you can download the NE1 modem, which was taken from the locked-bootloader Android 4.4.2-based firmware. It seems like each phone responds a little differently. Some people say stick with ML1, some prefer NE1. Personally, I don't notice much of a difference except with NE1, it seems to stay in 3G more when coverage is low, before jumping back to 4G. I would guess it does that to save battery by sticking to the strongest signal.
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Can't find a flashable zip of the baseband. I guess I can give it a go on Odin

DubleJayJ said:
Can't find a flashable zip of the baseband. I guess I can give it a go on Odin
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If you do Odin just be darn sure it's only the modem.
Here's a flashable zip of the modem:
https://www.dropbox.com/s/l002qoue90dx68a/DNE1.modem.zip?dl=0
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MrBrady said:
If you do Odin just be darn sure it's only the modem.
Here's a flashable zip of the modem:
https://www.dropbox.com/s/l002qoue90dx68a/DNE1.modem.zip?dl=0
Sent from my d2lte using Tapatalk
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Click to collapse
I flashed it. I'll see if that fixes the problem

MrBrady said:
If you do Odin just be darn sure it's only the modem.
Here's a flashable zip of the modem:
https://www.dropbox.com/s/l002qoue90dx68a/DNE1.modem.zip?dl=0
Sent from my d2lte using Tapatalk
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Click to collapse
So it worked fine up until yesterday around 3PM EST when my phone decided "haha not gonna send texts anymore."
I can call, receive calls, the whole 9 yards but I can't send texts. It sits at Sending for either 10 minutes - several hours or it fails
EDIT- Upon reboot it'll send a text sometimes but for the most part I can't send any
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