yashsingh1/xdaforums huggingface dataset:
[Verizon Samsung Galaxy S 4] Surge1223:
Its hard to give a quick explanation. Hlos stands for high level operating system, but in qualcomm terms it contains a bunch of items within it like audio calibration and wifi config..in my opinion flashing a nonhlos from a different bootloader its too close for comfort. You can mount the nonhlos with linux and investigate it for yourself if your really curious.
[Verizon Samsung Galaxy S 4] FernBch:
IIRC, it was explained in one of the CM threads. The idea is o have the nonhlos.bin from the same build as the modem and kernel to have everything play together properly. Basically if you're on a 4.2 or 4.3 based ROM you don't want to flash the nonhlos from say 4.4. It may work ok, but it won't be exactly what it should.
[Verizon Samsung Galaxy S 4] Surge1223:
The thing is if your on cm, than you probably have the ability to have a custom kernel (obviously) and that would allow you to compensate for the audio, wifi, bluetooth etc. But if you're not able to have a custom kernel (like most people with our device) then it would have negative effects. Then theres people who claim they get better performance with wifi etc with nonhlos but most of those people have no idea what nonhlos even does. Im just saying flashing the modem gives you aws, flashing the nonhlos doesnt gain you anything if your wifi and everything else is already working.
[Verizon Samsung Galaxy S 4] TheCelt:
Thanks Surge. Much appreciated!
[Verizon Samsung Galaxy S 4] scarmon25:
Thank you for being willing to post. I'm on cm and have the K2 base. I'm hoping the hlos will not hurt anything but if it does I know what did it and how to fix it. I am anxious to try and see it is does anything positive.
[Verizon Samsung Galaxy S 4] FernBch:
Exactly. Being how I am on CM 10.2.0 I have the ability. Couple that with CM merged the latest source (not 4.4.2) the discussion at the time was since the latest source was merged we would get the benefits of both files. My issue at the time was wifi related at flashing both was beneficial as I did see the predicted improvement. I have a nandroid of CM11 and plan on going back to it. That said, I theoretically should see the benefits of both again.
[Verizon Samsung Galaxy S 4] Surge1223:
Update: I posted the correct MK2 modem and the nonhlos + modem for MK2 as well.
[Verizon Samsung Galaxy S 4] FernBch:
Beat me to it, lol. Thanks!!
[Verizon Samsung Galaxy S 4] jorceshaman:
Correct MK2? Do I need to reflash it or was that just to solve the error some were getting while attempting to flash?

And thank you for maintaining this very helpful thread!
[Verizon Samsung Galaxy S 4] Surge1223:
I reflashed to see if I could tell a difference, but i cant tell a difference though should still work fine.
[Verizon Samsung Galaxy S 4] scarmon25:
Flashed the MK2 with HLOS modem on CM 11 and it completely bricked my phone LOL I'm kidding I'm kidding. It worked wonderfully. No adverse effect that I can see. WiFi and Data seem to be working just fine
[Verizon Samsung Galaxy S 4] FernBch:
Too bad it isn't April First, that would be awesome. Cruel but awesome.

This is the proper application of the modem+nonhlos. CM11 is 4.4.2 built as is MK2.
[Verizon Samsung Galaxy S 4] scarmon25:
That is my one good joke for this year. And even it was horrible. I'm not a funny person it seems. :)
[Verizon Samsung Galaxy S 4] FernBch:
Hey, don't knock it. I lol'd.
[Verizon Samsung Galaxy S 4] scarmon25:
On the 12/16 cm flashed the MK2 full modem package. Seems like I can turn WiFi off but not back on til I reboot. Flashed MDK full modem and back to normal. Can anyone recreate this for me so I know if its just me or not.
[Verizon Samsung Galaxy S 4] mirceab:
I can turn WiFi on and off just fine. CM 12/17, MK2 modem and NON-HLOS.
[Verizon Samsung Galaxy S 4] scarmon25:
OK cool. Then that means its just me. May be because I'm on 12/16
[Verizon Samsung Galaxy S 4] ryanw5489:
Ok I got a question here! I'm new to the whole flashing modem thing here. I certainly running Hyperdrive Rsl11 on my SCH-I545 I am using twrp. Now all I got to do is flash this an that it right.
[Verizon Samsung Galaxy S 4] vacaloca:
Yes, you can flash any of the "Modems only" files and revert between them without any issues.

I also recently upgraded to Hyperdrive RLS11 and flashed the MK2 modem and gave it a whirl in Boston, where I noticed that LTE band 4 (AWS) is already up and running. Results of a speedtest/service menu from my 3rd floor office indoors, about 20 feet from a window are attached. Some decent results while the spectrum is still not (overly) crowded... almost rivals my cable connection at home.
[Verizon Samsung Galaxy S 4] mirceab:
I'm also getting about 35M down / 10M up in Boston on Verizon with MK2 radios.
[Verizon Samsung Galaxy S 4] jstaab:
Installed MK2, getting 50M down, everything seems to be working fine.
[Verizon Samsung Galaxy S 4] Unicorn512:
This may be a dumb question but is Blurtooth also affected by the modem and HLOS files?

I have very strange BT problem where BT devices show as connected for media audio but not sound comes through. It stays on the phone.

BT for telephone is working just fine.
[Verizon Samsung Galaxy S 4] jstaab:
While I can't answer your question directly, I just tested in my car and the BT audio for music worked here with the update I applied
[Verizon Samsung Galaxy S 4] Surge1223:
All of this is effected by NONHLOS, so I could definitely see it effect bluetooth (in fact I know it effects bluetooth) you can test if it does by installing the modem + apnhlos zip package that corresponds to your bootloader, if you get bluetooth back then you know it effcts it. I would just stick to installing modem only zips.
[Verizon Samsung Galaxy S 4] Unicorn512:
I flashed the modem + apnhlos zip for original stock MDK bootloader but my problem remains unchanged.

I think it is time for warranty repair (bah humbug)

It will be interesting to see how this plays out.
[Verizon Samsung Galaxy S 4] iwearthebelt:
Just a suggestion, but have you gone to Applications>All>Bluetooth Share and cleared data & cache, Force Stop, then reboot phone? I had a similar problem once and that fixed it.
[Verizon Samsung Galaxy S 4] Unicorn512:
As I feared my problem seems unrelated to the rom installed. I am now running the original stock MDK system with the same results.

Looks like warranty time...

---------- Post added at 07:41 PM ---------- Previous post was at 07:35 PM ----------
[Verizon Samsung Galaxy S 4] Unicorn512:
I bit the bullet and repaired my phone with the Samsung repair software which installed 4.3 (MK2) and forever lost custom recovery for me.

Now media BT works! We shall see for how long...
[Verizon Samsung Galaxy S 4] scarmon25:
At least you can still root. May not be able to flash a lot of stuff but touchwiz with root isn't horrible.
[Verizon Samsung Galaxy S 4] Unicorn512:
Actually it's pretty good. I use Nova Launcher so most of it looks and works the same. I miss some of the Bonestock stuff but I can live with this.
[Verizon Samsung Galaxy S 4] hakisac78:
Hyperdrive rls11

You can try hyperdrive rls11 via safestrap 3.70 after you root. It's faster than stock tw and bt still works IMO anyways!
[Verizon Samsung Galaxy S 4] ryanw5489:
Ok I'm totally a noob to this flashing modems. But I've recently flash the last modem. This Is the first time I've done this on my mdk s4. Now if I flash a old backup that. Will the modem go back to my old one or do I need to reflash the latest modem again.

Reason I'm asking is due to my wifi. I was running Hyperdrive 11 and my wifi was messing up. So I went back to my old version of the rom. But I'm having the same issue. My wifi will constantly disconnect the reconnect. It only seems to do this when I loss service or get low.

Any idea. Really need help...
[Verizon Samsung Galaxy S 4] jorceshaman:
You can see which modem your phone is on by checking your baseband version.
[Verizon Samsung Galaxy S 4] ryanw5489:
OK I'm on mk2! But is anyone having issues with wifi, my wifi constantly disconnect then reconnects.. And my home Internet is fine. I have no idea what's gone on with it.
[Verizon Samsung Galaxy S 4] jorceshaman:
My fiance is 100% stock and has issues with our home wifi. Full bars and says connection too slow and disconnects. I rarely use wifi. I get LTE in the places I'd be using it and have unlimited data.
[Verizon Samsung Galaxy S 4] m-cat:
If I'm safestrapped on stock MK2 can I flash a MDK modem? I've heard that it's the best one available.

VZW GS4 safestrapped on MK2.
[Verizon Samsung Galaxy S 4] CC268:
MK2 radio has the wrong MD5 Checksum...can anyone verify the checksum so i can flash this
[Verizon Samsung Galaxy S 4] thesoldier:
You're right, does yours end with 8fb7ed? I flashed it and I've been fine.
[Verizon Samsung Galaxy S 4] CC268:
Yes it does, guess I will give it a go!
[Verizon Samsung Galaxy S 4] jorceshaman:
Mine shows the one listed.

Edit: I think I'm going crazy. Just saw this one in the OP and now I see something different.
[Verizon Samsung Galaxy S 4] Surge1223:
Whoops! My bad I swore I changed it. Just uploaded the correct one and checked to make sure sorry! Please re download the MK2 Modem!

I must have accidentally put the one I edited into the zip instead of the MK2 modem from the Odin tar but its fixed now and I have to say the modem does seem to be working better

(the correct MD5 should be bfc21d017741671e6b254ec6fc1feda8)
[Verizon Samsung Galaxy S 4] jorceshaman:
Glad I'm not going crazy and you just changed it. I just went to double check and saw something different. Lol
[Verizon Samsung Galaxy S 4] equake:
How does the MK2 modem compare to MJ7 modem since they are both from 4.3 and the same kernel (don't quote me)?
[Verizon Samsung Galaxy S 4] vanydotk:
Just flashed from MDK to MK2 (modem only, not NON-HLOS), did a before and after speed test, I was getting 8/15 on speed test, I am now getting 25/20. This test was performed in the San Francisco bay area. According to OP we should only flash the modem and not the NON-HLOS unless we're having problems, however I read somewhere in this thread that we should flash both. What does everybody think?
[Verizon Samsung Galaxy S 4] RedBullet:
Crap, I flashed to MK2 a week or so ago, and have had some BT issues. I assume I should go ahead and flash the new one?
[Verizon Samsung Galaxy S 4] jorceshaman:
The OP says not to for a better safe than sorry reason. He doesn't want to deal with people flashing it and not knowing why their wifi isn't working.

It may or may not cause issues.
[Verizon Samsung Galaxy S 4] ctoph0:
Has anyone noticed or documented a difference from upgrading from an MJ7 to MK2 modem?
[Verizon Samsung Galaxy S 4] Nydalxy:
I'm not sure what the general consensus is but in my area, I had more stable 4g connections. I didn't have the best of luck on mj7 but mk2 cleared everything up.
[Verizon Samsung Galaxy S 4] FernBch:
LTE seems more stable for me as well on MK2.
[Verizon Samsung Galaxy S 4] Surge1223:
Happy New Year!

Added Dev 1545OYUEMJ7_Modem.zip
[Verizon Samsung Galaxy S 4] RedBullet:
Any idea what's new?
[Verizon Samsung Galaxy S 4] dstreng:
Can this be flashed on all devices or just dev?
[Verizon Samsung Galaxy S 4] Surge1223:
All devices. Works the best so far IMO. getting full 5 bars at home...usually only get 3
[Verizon Samsung Galaxy S 4] anewday:
MDK doesn't have band 4 aws enabled, most likely you are connected on it now with MK2. :)
[Verizon Samsung Galaxy S 4] Redflea:
This is newer than MK2? How are the developer modems of the same build number different than the non-dev modems of that build number?
[Verizon Samsung Galaxy S 4] 808phoneaddict:
Modems shouldn't affect battery life should it?
[Verizon Samsung Galaxy S 4] FernBch:
Happy New Year to you and yours!
[Verizon Samsung Galaxy S 4] jorceshaman:
I don't think they directly do but if you have a bad signal, your phone is going to use more juice searching for a better one.
[Verizon Samsung Galaxy S 4] FernBch:
Correct.
[Verizon Samsung Galaxy S 4] equake:
Better than MK2?
[Verizon Samsung Galaxy S 4] scarmon25:
Well flashed the new MJ7. Still running the MK2 APNSHLOS modem and everything seems good on CM 11. Won't really know if any improvement until I get home tonight. Surely won't be any worse.
[Verizon Samsung Galaxy S 4] scarmon25:
Not sure if it does any better at the house then MK2. I live in a poor signal area tho.
[Verizon Samsung Galaxy S 4] jorceshaman:
I personally got noticeably worse performance with more dropped calls. In areas I normally had 4G it had no signal. At the Walmart DC I had a very sporadic signal, didn't even move and it was hopping between no signal and full 4G.

Reflashed MK2 and the issues disappeared.
[Verizon Samsung Galaxy S 4] vt0r:
Not for me.

Running the dev MJ7, I saw an unstable connection in my apartment, which is normally only a 1-2 bar spot as it is.

Went back to MK2, and all is well again.
[Verizon Samsung Galaxy S 4] Bait-Fish:
Frickin-ay! I was having trouble flashing these (again) and finally remembered having to shut the phone off and do the three finger salute. That did the trick!

Many thanks, surge!
[Verizon Samsung Galaxy S 4] radpp16:
Which of these radios supports Band 4 LTE?
[Verizon Samsung Galaxy S 4] s44:
MJ7 and MK2.

Use MK2, it's more refined.
[Verizon Samsung Galaxy S 4] radpp16:
Does MK2 support both 1700/2100 Band 4 LTE aka t-mobile LTE?
[Verizon Samsung Galaxy S 4] Surge1223:
Mk2 is the most recent
[Verizon Samsung Galaxy S 4] Alxoom33:
I thought OYUEMJ7 was the most recent?
[Verizon Samsung Galaxy S 4] scarmon25:
That one is the latest for the international version.
[Verizon Samsung Galaxy S 4] gt5oh:
What can happen if you are running a rom using baseband 1545VRUAMDK and you decide to flash a modem I545VRUEMK2?
[Verizon Samsung Galaxy S 4] scarmon25:
If you flash just the modem then nothing bad.
[Verizon Samsung Galaxy S 4] FernBch:
This.

If you're gonna try different modems, flash the modem only package. The modem+nonhlos needs to match the kernel (ROM) that it was based on.
[Verizon Samsung Galaxy S 4] Bait-Fish:
For reference, and comparison, the ME7 radio that worked for me was from this post.

--OctOS powered VZW GS4 Dev Edition
[Verizon Samsung Galaxy S 4] Surge1223:
Strange, I can flash any of them. Im going to pm the OP of that thread and see if he/she knows something i dont.
[Verizon Samsung Galaxy S 4] anthony92170:
Im rung beans 7 with mI1 modem and everything works bit still have me7 kernel. I would likw to try flashing mI1 kernel to see if wifi still works. Anyone have a flashable mI1 kernel
[Verizon Samsung Galaxy S 4] Eric214:
I've run the main 3 modems... MDK ME7 and ml1. The best one in my area I feel is ME7. I'm get about 8-10 mbps more with ME7. Also, I'm about 30 min South of Philly.

I haven't yet tried the Dev Edition MDK yet but don't expect any difference the the vzw MDK
[Verizon Samsung Galaxy S 4] Bait-Fish:
Makes me feel like I'm doing something wrong, that this ME7 and MI1 don't flash successfully for me. . . :o

--OctOS powered VZW GS4 Dev Edition
[Verizon Samsung Galaxy S 4] arcrox:
Thanks for uploading these!
[Verizon Samsung Galaxy S 4] Surge1223:
They will work in your situation. I have 2 gs4's one on MDK and one on ME7. These zips should work for all situations though. We've had problems with Dev devices, maybe because they don't have to use Safestrap or Loki'd recoveries...im still looking into it for them.
[Verizon Samsung Galaxy S 4] JaeKay:
You can't flash newer kernels because I think that messes with the exploit, i believe.
[Verizon Samsung Galaxy S 4] markwebb:
The MI1 modem is slow on my dev edition. So far, the me7 works better for me. Again, experiences can differ per device and location.
[Verizon Samsung Galaxy S 4] Bait-Fish:
Mark, are you using Philz CWM?

Maybe the recovery matters? I'm using TWRP, installed via GooManager last week. I'm guessing it's likely loki'd.

I have experienced some long splash screen pauses and some full out non-response at splash screen (just this morning multiple times consecutively).

--OctOS powered VZW GS4 Dev Edition
[Verizon Samsung Galaxy S 4] JamesPumaEnjoi:
great stuff man thank you...i much rather flash in recovery than busting out my computer
[Verizon Samsung Galaxy S 4] linuxthinker:
I'm still on the original MDK firmware. Do any of these modems enable AWS? I'd like to use my device with AT&T's LTE. Thanks!
[Verizon Samsung Galaxy S 4] Bait-Fish:
This is but one person, but a screenshot of 50 Mbit download seems AWS-like.

--OctOS powered VZW GS4 Dev Edition
[Verizon Samsung Galaxy S 4] Metroba:
I too am experiencing this. I'm on CMW touch 6.0.3.8. Can't get past the boot screen and have to revert to MDK to boot back up.
[Verizon Samsung Galaxy S 4] Travisdroidx2:
I am on MDK firmware and using the new modem. I posted the 50+ screen shot that was mentioned. I will post another of my average in a few minutes.
[Verizon Samsung Galaxy S 4] rexdog1888:
I also got a speed increase. May be entirely coincidental but this is from a few minutes apart in the exact same location, one before flashing and one after.(the bottom two)
[Verizon Samsung Galaxy S 4] Travisdroidx2:
Here are my results and averages for MDK with the newest modem. Please note I have had a few more readings in the 50's + but are not on that list of results.
[Verizon Samsung Galaxy S 4] rexdog1888:
Anyone know if there's a way to check the frequency or anything? It'd be an easy way to confirm for sure one way or the other
[Verizon Samsung Galaxy S 4] Metroba:
Switched to new Philz CMW recovery and that did the trick. No hang times whatsoever. I forgot how great that felt :cyclops:
[Verizon Samsung Galaxy S 4] Travisdroidx2:
I only use twrp 2.5.0.2 I know Nitro had bad things happen when he tried Philz. I believed it wiped his ime number.
[Verizon Samsung Galaxy S 4] gt5oh:
I think I messed up big time, I was trying various S4 Verizon Roms from 4.2 to 4.3 to 4.4 roms and I was flashing modems.

I resorted back to Eclipse 4.2.2 and the build # is JDQ39.I545VRUAMDK

My baseband was I545VRUEMK2 and I was having trouble placing calls and audio.

I just flashed the I545VRUAMDK.zip modem only and I am still having problems... what the hell did I do?
[Verizon Samsung Galaxy S 4] FernBch:
Try flashing the MDK modem.bin+nonhlos.bin package, then wipe system and cache (not data). If that doesn't fix you up, save what's important on either an external sd card or to a PC and clean flash your MDK based ROM.

Note:

Flashing a ROM will not change your baseband (modem).
[Verizon Samsung Galaxy S 4] Surge1223:
OYUEMJ7 is the most recent posted, but by date MK2 is more recent
[Verizon Samsung Galaxy S 4] gt5oh:
Im starting to think now its not a modem issue. Because I did a FULL wipe and reinstall of everything

and everytime I hit the phone icon the whole device freezes and lags. Something with the android phone process, any idea what I can do, basically any calling function is useless right now
[Verizon Samsung Galaxy S 4] FernBch:
At this point I am out of suggestions. You could try asking in the thread about your ROM.
[Verizon Samsung Galaxy S 4] Alxoom33:
Which has the most up to date radio/modem?
[Verizon Samsung Galaxy S 4] FernBch:
As Surge stated:

OYUEMJ7 is the most recent posted, but by release date MK2 is more recent
[Verizon Samsung Galaxy S 4] equake:
Its probably the /EFS partition thats corrupted. Unless you backed it up in recovery you would need to ODIN the factory stock image and start over.

My 2 cents.
[Verizon Samsung Galaxy S 4] 808phoneaddict:
Is that partition regularly backed up in recovery?
[Verizon Samsung Galaxy S 4] Cilraaz:
I had something strange happen for me. I was on MDK build and baseband. I updated to the MK2 modem. The signal strength (RSRP/RSSI values) was about the same as MDK. I ran a speed test and had a higher ping. In addition, my download speeds dropped through the floor, while upload remained fairly unchanged. I changed my preferred network type from LTE/CDMA/EvDo to LTE/CDMA/EvDo/GSM/WCDMA. My signal strength improved, my download speed instantly became higher than when I was on MDK, and my upload speed increased slightly.

I have no idea why this change would have done anything. I tried changing network type back to LTE/CDMA/EvDo to make sure it wasn't a fluke. The numbers were instantly worse. Perhaps it's due to the fact that I'm in a corporate building using VZW-installed cell repeaters (as opposed to connecting directly to a cell tower). Anyone have any idea?
[Verizon Samsung Galaxy S 4] ctoph0:
I have noticed this too under same conditions.
[Verizon Samsung Galaxy S 4] anewday:
I only see LTE/CDMA and GSM/UMTS in preferred network settings. How were you able to see LTE/CDMA/EvDo/GSM/WCDMA or is that "Global"?
[Verizon Samsung Galaxy S 4] Cilraaz:
It is listed as LTE/CDMA/EvDo/GSM/WCDMA when I made the selection. Afterward, in the menu, it shows as Global.
[Verizon Samsung Galaxy S 4] mbastats:
Problems ending call

I'm needing some help yall. Before I get started, I've done extensive research and reading on this and have tried many things to fix the problem I am having. I've posted for help in other places ( and so have many others ) but no response.

The problem I am having is that other than one 4.2.2 custom rom, any other rom I try 4.3 or 4.4 will not allow me to end phone calls. This is NOT due to the proximity sensor in my case. When I start a phone call, I can press end. The phone says "hanging up", but doesnt actually hang up. The phone call keeps going! Either have to toggle on airplane more or pull the battery to end the call.

I have a Verizon S4 with T-Mobile service, running LTE perfectly with the latest MJ7 modem.

My question to all of you is, could this be a modem related issue? I've tried MDK and MK2, but the hanging up issue is still there. Could this be a kernel issue or something else?

Any help would greatly be appreciated! BTW, I wrote a tutorial on how to do 4.2.2 with LTE for Verizon phones with T-Mobile service if anyone needs it or if it helps to explain my problem (not sure it will). http://xdaforums.com/showthread.php?t=2560128

Thank you for any help you can give.
[Verizon Samsung Galaxy S 4] majorlag:
I'm not a dev but it seems more like something to do with 4.3 or 4.4 than modem.

Seperate question, do you have Tmobile LTE coverage everywhere in Dallas?
[Verizon Samsung Galaxy S 4] mbastats:
thanks, and yes I do!

Thanks for your response on that. I agree with you, after working on it some more I think it has to have something to do with the actual ROM. Since I can't flash a T-Mobile eom without getting an error (which means I would need to edit the build.prop and a few other files to port it).

To answer your question, I get LTE seriously EVERYWHERE in the DFW area. Only when I get 45 miles outside and in a very rural area will it drop to H+ or 3g.
[Verizon Samsung Galaxy S 4] bsimpson1:
I am on the mdk firmware but can't seem to figure out what I should be doing to get the latest radio. I have the mdk modem right now, but I see others In the CM11 thread talking about installing the mk2 + nonhlos zip but this thread seems to imply that not only should I not flash any modem beyond mdk if I'm on mdk, but also that I shouldn't flash the nonhlos zip.

Can someone verify that I should not be flashing any modem newer than mdk if I am on the mdk firmware?
[Verizon Samsung Galaxy S 4] anewday:
I'm on mdk and flashed the mk2 modem only without any issues.

Sent from my Galaxy S4
[Verizon Samsung Galaxy S 4] Mistertac:
Same here. Just flash the modem only file like Surge has stated to do most the time. I'm on MDK and I flashed the MK2 modem without issue. You can flash back and forth with these without a problem so SHOULD you run into an issue u can just flash back the desired modem. You shouldn't have any issues though. Nice an easy
[Verizon Samsung Galaxy S 4] FernBch:
The way it was explained to me was, to get the best results, only flash the modem in most cases. You want the mainly the nonhlos.bin to match your build/kernel for the best experience. Those in the CM11 thread (I'm one) who have flashed the MK2 modem+nonhlos have done so because CM11 is based off the 4.4 build/kernel.

That said in most cases, such as yours, just flash the modem only package and you'll be fine.