yashsingh1/xdaforums huggingface dataset:
[Nexus 5 Android Development] EvanA:
Just be careful with .15. Sprint towers use a technology called eCSFB (enhanced circuit switched fallback) that enables handing the phone off from LTE to the CDMA network for calls. The .15 radio ignores whether a tower has eCSFB active or not, so there is a possibility you would miss calls or texts if the phone connects to one of these towers.
[Nexus 5 Android Development] :
Thanks for the info. I'm staying on 17 as it's been great for me. =)
[Nexus 5 Android Development] SteveMurphy:
Thank you, OP, really great info here. I switched to 17 yesterday (thanks for the tip, flashback) in preparation for a family trip to the lake where I usually get next-to-no reception; actually had two bars this time!
[Nexus 5 Android Development] SedyBenoitPeace:
Guys i have this problem with mobile data http://xdaforums.com/google-nexus-5/help/strange-problems-mobile-data-landscape-t2765527 do you think that with a new modem i can resolve the problem? And how can i see if the Carbon Rom that i mentioned in my thread changes the modem?
[Nexus 5 Android Development] lesp4ul:
I'm in Indonesia, any suggestion which modem should i use? Thanks.
[Nexus 5 Android Development] SteveMurphy:
I answered you in your thread.
[Nexus 5 Android Development] dmillerzx:
Switched to .17 yesterday, as of now I have not had a single data stall or connection drop AT ALL. With .23 I was having these occur numerous times daily. Typically when transitioning towers, transitioning connection type, etc.

What's more interesting is I never saw these data issues with a previous Nexus 5 that had been manually flashed with the .23 radios again after the update to 4.4.2.

Perhaps flashing the .23 radios again will offer better performance. Weird.

All I know is when I received a brand new Nex5 for an RMA from Google (was running 4.4.2 / .23 radios out of the box) the radios were COMPLETE trash!!!

T-Mobile - BMore / Wash
[Nexus 5 Android Development] cmstlist:
I moved from Vancouver to Toronto and found the data radio stalls here a lot on WIND Mobile. Was very rare to see that in Vancouver. So I tried downgrading to 17 as well. I'll report back if it's any better next time I'm in one of the zones where that tends to happen.
[Nexus 5 Android Development] jetbruceli:
Hey I see that for the European model the modem is set at 17 and us has the 23. My EU model running stock rooted has the 23 version and I haven't seen any issues. Am I better still to use 17?

Forget the thanks button, i want a high five!! ✋
[Nexus 5 Android Development] :
I know where im located,

in the Southern Gulf Coast area of the USA (Mississippi) 17 is much better than 23. Id say give em all a test run and see which is better.

Sent from my CKat Nexus V
[Nexus 5 Android Development] jetbruceli:
OK will try

Forget the thanks button, i want a high five!! ✋
[Nexus 5 Android Development] claucXC:
Anyone in the South Bay area of Southern California using the 17 modem with better results than the 23 on T-Mobile?
[Nexus 5 Android Development] cmstlist:
I can report that on the newest radio and the 17 radio I often get data hangs in Toronto on WIND Mobile. Just to describe what I mean, the 3G/H symbol shows, data doesn't flow. But also, when I enter airplane mode, it takes 10-30 seconds for the 3G/H symbol to vanish instead of the usual 1-5 seconds. If I don't wait that entire duration before disabling airplane mode, it won't reconnect to data properly.

The 15 radio behaves a bit differently. The data actually drops out rather than appearing to still be there. And so far, no delays in airplane mode.
[Nexus 5 Android Development] :
Your location doesn't matter as much as the hardware in the phone. Each phone is different, so you'll get different service.
[Nexus 5 Android Development] Koopa777:
I had two N5s, and ended up mixing up the two efs's. I made two that I know are form the new one just today, but my original from April I'm not sure is correct. Is there any way to figure out which one or am I fine with the new ones? Thanks!
[Nexus 5 Android Development] jd1639:
Just use the new one and delete the others. The efs doesn't change with time and if you restore the wrong one you'll be screwed
[Nexus 5 Android Development] chikimonke:
New Factory Image and Binaries available. Hopefully we get a good modem update out of them...
[Nexus 5 Android Development] autoprime:
OP updated with latest LG-D820 KTU84M radio info.. flashable zip and modem.img
[Nexus 5 Android Development] JamesPumaEnjoi:
Thanks man

Sent from my Google/LGE Nexus 5 Hammerhead
[Nexus 5 Android Development] vomer:
thanks! anyone have the flashable new bootloader?
[Nexus 5 Android Development] Tylog:
Fast:) thank you, let's see how the new baseband works.

Tapatalk Team SlimRoms
[Nexus 5 Android Development] chikimonke:
It's the same as 4.4.2 :(
[Nexus 5 Android Development] vomer:
guess it didn't need an update :cowboy:

edit mirror for radio: http://www.androidfilehost.com/?fid=23501681358541357
[Nexus 5 Android Development] dave2metz:
Can the new radio be flashed using 4.4.2 Slimkat Rom? I think the answer is yes, but it's been a while. Thanks a lot
[Nexus 5 Android Development] Tylog:
Yes you can

Tapatalk Team SlimRoms
[Nexus 5 Android Development] peecs121:
It can be flashed on all roms right?

Nexus 5 powered by AICP/ElementalX/Nova Prime
[Nexus 5 Android Development] Jiggs82:
Yup
[Nexus 5 Android Development] :
I just realized I have the HHZ11k BOOTLOADER VERSION!

This is the 4.4.1 if I'm not mistaken.. could someone make a zip for the 4.4.2 or 4.4.3? since its the same?

Thank you!

Edit: Flashed the modem 4.4.3 thank you for the .zip (:
[Nexus 5 Android Development] mj084:
flash it via "fastboot flash bootloader bootloader-hammerhead-hhz11k.img"

that's all
[Nexus 5 Android Development] sammael1069:
Same hear but only tried one tower so far.

My Nexus 4 has 10db more signal strength than my N5. :(
[Nexus 5 Android Development] :
too noob for do that, I can't never get to work adb commands, if someone can post a flasheable .zip of the latest bootloader available I would be thankful!
[Nexus 5 Android Development] Vegasden:
Mario, why not look in the OP? Links for .zip is there. Or scroll up a bit fur a .zip mirror.

- - - - - - -
[Nexus 5 Android Development] :
I already flashed .zip for the Radio Modem, I was just asking for the bootloader since I have the 4.4.1 ^^ I guess I will have to search in other threads haven't found anything in here!
[Nexus 5 Android Development] vomer:
from what I heard, there was no bootloader changes
[Nexus 5 Android Development] Koopa777:
On my home tower(Sprint), signal improved about a bar. It used to be 2-3 bars, now it's either 3 or full(4). I'll be driving a good deal tomorrow, switching in and out of LTE areas. I'll see if the LTE lock issue with 4.4.2 is fixed then. :good:

Literally just had a data drop as I typed that. Sigh....
[Nexus 5 Android Development] flonker:
Phew. Lost my IMEI there for a minute and my backup wasn't doing anything. Finally got it back.
[Nexus 5 Android Development] Creed0:
I'm having similar issues with T-Mobile. Though I've now resorted to using gravity box's smart radio feature by setting my power save mode on 2g. Now in low LTE areas the radio auto switches to 2g which is usually full bars.
[Nexus 5 Android Development] tatoniss:
I am seeing a signal increase on the latest modem. Also connected to sprint band 26 for the first time.
[Nexus 5 Android Development] refedit:
I searched but didn't find answer my N5 is D821 version.

should I flash new 820 radio? or should I whait till d821 version comes out?

or did they still the same?

best regards
[Nexus 5 Android Development] madroamer:
I don't get data service alone. How to rectify bought from usa
[Nexus 5 Android Development] bartolinio:
flash D820 over D821

the same as in the previous edition, Radio fits into both N5 versions

I have now new Radio (4.4.3) on D821 and everything works properly
[Nexus 5 Android Development] GadgetLady:
Tried several times to download new radio from OP (on 2 devices). Bad zip file every time. And only 8kb.

Update: Tried from desktop PC. No problems!
[Nexus 5 Android Development] ihatelolcats:
i flashed the backup zip and i can see the folder and zip file it created in recovery. but i cant see the directory from es file explorer with root priviliges or by using adb pull. so how am i supposed to get to it?
[Nexus 5 Android Development] gee one:
if you can see then file in recovery, then use adb pull in recovery. i think you might have to pull each file separately. i don't think adb will pull the whole folder in one shot.

sent while running with scissors
[Nexus 5 Android Development] ihatelolcats:
ok, this is turning into a separate issue but adb cant connect when in recovery. it shows up as AOSP on Hammerhead in device manager and i cant update the driver... adb works fine when booted though
[Nexus 5 Android Development] gee one:
that's strange. which version of adb are you using? on windows?

sent while running with scissors
[Nexus 5 Android Development] ihatelolcats:
i think its a windows problem not adb, but its version 1.0.31

im going to ask in another thread. thanks for your help
[Nexus 5 Android Development] lart2150:
I just extracted the files in both modems and the only difference is modem.b00. 820 does not have that file but 821 does the other files are all the same according to md5sum. seeing as it's a small 948 byte file I don't know if it's what we are looking for or if it really is something in hardware or flashed on some other storage(efs?).
[Nexus 5 Android Development] Farva0412:
Not to sound stupid, but what does this mean? Can I use International Modems on my US version?? What exactly can i do with this info?
[Nexus 5 Android Development] melbourne408:
Here is a dump from my N5, haven't flashed anything else just yet.

(Edit: Here is a link http://d-h.st/hIc.)
[Nexus 5 Android Development] dead0:
I also had a similar problem but eventually found the file. go to the root directory and then sdcard/shell folder.
[Nexus 5 Android Development] melbourne408:
Should look like this
[Nexus 5 Android Development] melbourne408:
Will be posting a link to a flashable version of the radio, uploading to Dev host now:thumbup:

(Edit: Here is a flashable version:

http://d-h.st/trL :eek:

official name M8974A_KRT16M)
[Nexus 5 Android Development] tylerdurden83:
Any way to backup the efs using fastboot / any method that doesn't require to unlock the bootloader?

Thanks!
[Nexus 5 Android Development] van_gogh:
Hello guys,

Please kindly advise if it's possible to flash D821 modem to D820.

Thanks in advance!
[Nexus 5 Android Development] dvdivx:
No kidding. I'd love to know that too. Since they have matching md5s I hope so. Big difference is just the LTE coverage.
[Nexus 5 Android Development] markwebb:
DL link is not working. down?

Link is now working. Thanks.
[Nexus 5 Android Development] visceralpsyche:
Japanese edition frequency list

I finally got my Nexus 5 (LG - D821) here in Japan and thought it was worth showing which frequencies it supports out of the box:

What's interesting is that like the US variant, it has the same modem baseband: M8974A-1.0.25.0.17

My theory is that once more devs get the phone, and given that the modem is supposed to be Qualcomm's single SKU world solution (RM360), I think that we will eventually figure out how to access and change the frequencies on the phone itself to be compatible with wherever it is we live and want to access.

A software switchable modem would be awesome and truly make the phone a global phone!

I think the only difference with the D820 and D821 is the initial shipping frequencies set at the factory for the region they want to ship to (in my case, Japan, which uses frequencies like 800MHz).

Hope this image helps someone to maybe figure out how to alter the frequencies using a software/hardware interface.

Cheers!
[Nexus 5 Android Development] mybook4:
Nice to see autoprime here! Thanks for the help in i535 HSPA investigation!

Just my two cents (and speculation), but...

I wouldn't hold your breath on this. I suppose it might potentially be possible, but I think it's more likely that changing frequencies can't be done (due to different radio hardware). If LG/Google could have made a truly global LTE device (for the price target), they probably would have. Making one device (i.e. designing, spinning, and testing one PCB) would have reduced engineering costs. This leads me to believe there are actual radio hardware differences between the D820 and D821.

The fact that the modem is identical between models doesn't necessarily mean they have the same radio hardware. Rather, it could mean that the modem has code that is never run by a certain device. For rough example:

if (model == D820) {
do something
} else if (model == D821) {
do something else
} else {
wtf?
}

I would argue that the D820 and D821 modems would most likely shared a lot (but not all) of the same code. I would imagine it is more efficient and removes confusion to manage one modem code repository and to make a combined modem that supports both models.
[Nexus 5 Android Development] Tony_YYZ:
That's for the info OP! Just created my EFS backup via TWRP and uploaded it to Dropbox.
[Nexus 5 Android Development] melbourne408:
I got too excited for the modem, it is the same. In other news, called at&t up this morning and updated my IMEI :D
[Nexus 5 Android Development] sxp:
modem identification hw resitor

see Attached pictures
[Nexus 5 Android Development] refedit:
So I'm on a 4.4.2 rom, no problems flashing 4.4.3 radio? And d'you notice improvements with new radio?
[Nexus 5 Android Development] Koopa777:
I'm noticing worse network performance on Sprint LTE. Yesterday, I got 15-20 MB/s, and today in the same spot I get 8-11MB/s. Could be Sprint but it seems unlikely...Also the LTE switch bug is still present. If I start in 3G, it won't connect to LTE until I airplane the phone.
[Nexus 5 Android Development] adrman:
I flashed it on Rastakat 4.4.2 last night and there are no problems. I'm seeing slightly better signal strength in my apartment, which is where I've gotten the lowest readings in the past as I'm located in a coverage hole. I should add, I'm on TMobile prepaid.
[Nexus 5 Android Development] icd-evil:
Just an FYI, the site seems to be offline.

EDIT: It is up now. 6/3/14 @ 11:49AM/EST
[Nexus 5 Android Development] kingston73:
So so far I'm seeing a couple Tmo users saying it improved and a sprint person saying it degraded signal. Would be helpful if people would also say where they are when they say whether the new modem is better or worse, along with their carrier.
[Nexus 5 Android Development] Rycon33:
yes, it seems so atm
[Nexus 5 Android Development] flonker:
Worse for me on Sprint.

Had one bar of LTE in my house, now it won't stay connected.

Also lost my IMEI when flashing the new radio. So I had to flash my back up. Problem is, I now lose my IMEI every time I flash a modem. Flashing the backups works, but it takes multiple attempts.

Also the degraded signal (not being able to connect to LTE in my house) has stayed even after switching back to previous modems.

I'm guessing a partition or something became corrupted when I flashed the new modem.

Anyone with more expertise think that flashing the stock .img files and completely wiping my phone will be of any help at all in this situation?
[Nexus 5 Android Development] jfim88:
Flashed the new 4.4.3 Radio on Purity and all good! Thanks

Enviado desde mi Nexus 5 mediante Tapatalk
[Nexus 5 Android Development] toanau:
I am getting weaker LTE connection with the new modem
[Nexus 5 Android Development] topgeardave:
Flashed the 4.4.3 radio on CM11 29th nightly and on HSPA it's exactly the same signal.

Just one question if I want to revert to 4.4.2 radio am I right in saying that the kot49E is the one to flash?
[Nexus 5 Android Development] Koopa777:
Honestly, I think it's something to do with Spark. When I flashed ZVA radios on my G2, the radios with B41, the phone was never right, even with ZV8.

Doesn't the factory image delete then flash the radio? Try that first. If not, no idea.

I'd like to know this too. Turns out, this damn backup zip doesn't work in PhilZ. So it never really backed my efs up in April. I tried again two days ago and it failed, TWRP flashed immediately.

So my question is can the efs get damaged in a way that you still have IMEI, but other issues exist? How would you fix that? You have signal, so I guess an RMA is technically an option... I'm just sort of pissed because my original efs backup is corrupt, and my new backup might have issues...
[Nexus 5 Android Development] gd6noob:
thanks
[Nexus 5 Android Development] kingston73:
With the new modem on Tmo I'm getting lte at my house now, I only ever saw h+ before. I know that's not much of a test but it's at least no worse for me. I'm outside of boston.
[Nexus 5 Android Development] autoprime:
the modems in my thread are inflated to fill up the full modem partition making sure every single byte is being rewritten to. so erasing the modem first shouldnt matter. modem should be written to while in recovery or in the bootloader(fastboot)... if trying while booted thats just not a good idea.

very weird that the backup zip doesnt flash in philz.. there is nothing "twrp-specific" in the scripts in the zip. If anything I could maybe see the new flashable zip not being created... but the 2 modemst1/modemst2 images should always be there backed up. idk.. wish I had an answer for that one.

as for your original backup being corrupt.. what makes you say that exactly? it made the backup zip but the partitions are empty(00s) or something else? and were the modemst1/modemst2 img files never saved either?

hard to fix efs without knowing how to rewrite it.. which is done with qualcomm windows tools while your phone is connected in diagnostic mode(which needs a custom kernel, furnace, to even work). efs is sorta like a windows computer's registry... thousands of small settings for all types of stuff. and due to efs protection... you cant use someone elses efs on your own device. i would say that as long as the radio works.. gps works(on stock).. and the imei is displayed.. efs should be fine.. which would make your most recent backup also fine. you would most likely know if efs was bad... youd have no signal.. or no gps despite flashing back to stock.. or no imei displayed in settings.
[Nexus 5 Android Development] flonker:
So... You said that the radio zips are made to take the entire space of the partition- effectively erasing any unwanted/possibly corrupt data in the process? This mean flashing factory images through fastboot would most likely not help? I don't know if my recovery isn't writing correctly, but I can't get my radio/modem to preform as it did prior to flashing the modem for 4.4.3.

Things are getting a little odd, and I'll probably just flash back to stock and start over.

Hoping maybe you could offer an explanation just for the sake of me learning.

What do you make of this:

•Reboot to recovery

•Flash modem (in this instance the previous one to the 4.4.3 release)

•Reboot to system - No signal/IMEI gone (which happen every time now, never did before)

•Reboot to recovery

•Flash EFS backup

•Reboot to system - No signal/IMEI gone

•Reboot to recovery

•Flash modem

•Flash same modem again immediately after, Recovery hangs during flashing process on second attempt

•Power off and reboot

Splash screen loops 3X and then boots into system and my baseband/IMEI have been restored...

This doesn't make sense, right?
[Nexus 5 Android Development] snowbdr89:
I'm using a sprint nexus 5 on T-Mobile flashed over mahdi ROM with 0 issues and i seem to be getting a stronger signal and my lte connects instantly say like after a reboot or after making a call!!
[Nexus 5 Android Development] BTT8:
When ROMS update to 4.4.3, they should be including the latest modem too correct? Or is the modem something we have to manually flash ourselves?
[Nexus 5 Android Development] sabbotage:
If you're running a custom ROM you'll have to flash the radios yourself. If you are stock they will be applied with the OTA.
[Nexus 5 Android Development] adrman:
I've flashed these radios, including the latest, with Philz and not had any issues.
[Nexus 5 Android Development] BTT8:
The speed I'm getting with the latest modem. On Tmobile.
[Nexus 5 Android Development] pierrep56:
Sorry for the noob question... but I am a bit lost. I made a EFS backup with the flashable zip when I got my Nexus in November, then I was with stock and 4.4. Then I changed the Rom a few times, now running a custom 4.4.2 Rom (Mahdi). Never have deal with the EFS since. Last week I suddenly paid attention that I can't send pictures as MMS (have the "service not activated on network" message) and have search in APN settings, etc... nothing helps. All the other services are working OK. Then I paid attention yesterday that my IMEI number is different than the original one (the one I have in the backup flashable zip). Also the IMEI SV number is now 05, when it was 01.

I don't know what is the meaning of the change, but I wonder because it was said in the thread and in the OP that the IMEI number is unique to each phone... and mine has changed. Could this be related to the MMS issue ?

What do you advice guys...?? Let it this way (and forget about MMS) or restore the original one ? Also soon I plan to update to 4.4.3 ... should this make any change in the IMEI "again" ??? :confused: Any advice would be appreciate. Thanks

EDITING :Was a wrong assertion about the change of IMEI.... I have check online, the "first" IMEI was not the Nexus one but my old Galaxy S4 number .... my bad, sorry.
[Nexus 5 Android Development] Recl@imer:
Install new radios

Guys,

I'm on purity 4.4.2. can i update the radios from 4.4.3 " LGD820_KTU84M_RADIO.zip" even while i'm on 4.4.2? How do I install? just flash this zip in recovery?

Thanks.:o
[Nexus 5 Android Development] y2whisper:
You are correct.
[Nexus 5 Android Development] Recl@imer:
Thanks!
[Nexus 5 Android Development] Jaza78:
I am on D821 CAN I flash D820 4.4.3 modem zip ?
[Nexus 5 Android Development] GzC:
Read the op, you'll find the answer.
[Nexus 5 Android Development] ej8989:
I'm on Mahdi 4.4.2 and the 4.4.3 modem works just fine :)
[Nexus 5 Android Development] rhamej:
Stupid question I'm sure, but where do I look to see what version I'm on?
[Nexus 5 Android Development] ej8989:
The OP stated they're the same. So yes, you can.
[Nexus 5 Android Development] samersh72:
you mean D820 or D821?:

-from the box

-from fastboot mode

-from settings>About phone>Regulatory information
[Nexus 5 Android Development] Spider_Pig27:
Thanks worked like a charm through philz
[Nexus 5 Android Development] rhamej:
Thanks!
[Nexus 5 Android Development] Koopa777:
Could you elaborate? Then why are people saying that .15 is the best on Sprint?
[Nexus 5 Android Development] toanau:
Does it matter which modem u use with which version of android?
[Nexus 5 Android Development] cmstlist:
The changelog for 4.4.3 said it fixes some radio hangs, so I'd suggest trying the newest when using 4.4.3 and then only downgrade if that one gives you problems.
[Nexus 5 Android Development] galaxys:
Newest radio showing better up/down speeds so far! T-Mobile usa LTE.
[Nexus 5 Android Development] Neverendingxsin:
Latest radio is working great on AT&T.
[Nexus 5 Android Development] nevrlow:
At home I use to get lte now with new radio I'm getting h+ womp ?
[Nexus 5 Android Development] Tylog:
No, you can use every modem with every version.

Tapatalk Team SlimRoms
[Nexus 5 Android Development] mhdsanto85:
Is there a different modem for 821 in 4.4.3?

thanks,.
[Nexus 5 Android Development] bartolinio:
Once again: NO, it is the same for both devices!!!
[Nexus 5 Android Development] Red5:
I wasnt aware that a new radio came out in May 7th (D820 KTU84M 4.4.3). Ive been using whichever one came with Cataclysm (or from the OTA for 4.4.2). The newest one that came with stock 4.4.3 seems to give me lower signal and falls back to H+ a lot more. Anyone have a better suggestion on which modem to use in the California area?