Will updating to 4.2.2 give better performance? - Nexus 4 Q&A, Help & Troubleshooting

Hi all. I just got an N4 on the 11th and it is still on 4.2. I am on Rogers with an LTE package. Will updating the software give me any benefit? It is rooted and was rooted after the APN settings were entered. Will the boot loader unlocking and rooting delete the APN settings? I was wondering if this is why I get nothing better than h for reception. Thanks.
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quicksilver53 said:
Hi all. I just got an N4 on the 11th and it is still on 4.2. I am on Rogers with an LTE package. Will updating the software give me any benefit? It is rooted and was rooted after the APN settings were entered. Will the boot loader unlocking and rooting delete the APN settings? I was wondering if this is why I get nothing better than h for reception. Thanks.
Sent from my Nexus 4 using xda app-developers app
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4.2.2 disables the LTE functionality as it has a new radio that does not support LTE. You may however flash an older radio from the 4.2.1 rom, this may cause fc `s however (some users, not all). 4.2.2 as such is however a improvement over 4.2.1.

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Radio update question

Let me start by saying I know I have asked a few questions lately and I really appreciate the help. I am brand new to the nexus and don't want to brick it. I don't got money to just get another if I break it so I am being very careful with what I flash.
That said, I am planning to update my radio and I have read a few threads with regards to the topic. I found most of what I needed to know. My problem is I read a lot of posts saying it "broke" sensors or WiFi when flashed with the 4.2.1 Roms. Now it also goes on to say that 4.2.2. works fine with the newest radio, but i also seen where some were using a older radio (.27 I think it was)
Question 1- Can I use the .27 radio with the newest roms or is there a reason I need to use the .48 radio? Reason being the newest radio disables lte connectivity. Maybe the .27 keeps it?
Question 2- do I need to flash the new bootloader with the radio?
Sorry to act like a noob but with my older g-1 flashing the wrong radio and SPL could brick the device. So once again I am just trying to make certain I am taking the right steps. Thanks in advance...
Sent from my Nexus 4 using xda premium
Question 1:
Some people lose audio on phone calls when running the older radios on 4.2.2, but CyanogenMod 10.1-based ROMs work fine with .33 or .27 basebands, at least in my personal experience.
Question 2:
Not sure if there is some interplay between the bootloader and whether the radios work on 4.2.2. Haven't heard of there being any issues in this regard.
Sent from my Nexus 4 using Tapatalk 2
Yeah I would figure the cm variants would be coded for all different radios . I just didn't know if anyone out there knew the exact differences in radios and bootloaders. I have read so many posts and still can't get a really clear explanation.
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selfinflicted1 said:
Yeah I would figure the cm variants would be coded for all different radios . I just didn't know if anyone out there knew the exact differences in radios and bootloaders. I have read so many posts and still can't get a really clear explanation.
Sent from my Nexus 4 using xda premium
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I flashed .33 radio on 4.2.2 in order to keep using LTE here in Mexico. Phone works fine, haven't had any issues with it so far.
pacoguevara said:
I flashed .33 radio on 4.2.2 in order to keep using LTE here in Mexico. Phone works fine, haven't had any issues with it so far.
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So you're using CM 10.1 with Radio .33 without issues and maintaining LTE/4G connectivity?
If so is it the latest nightly?
I was under the impression that the 33 radio caused all kinds of problems with 4.2.2. Are you sure you aren't on 4.2.1? Its crazy because I seen a lot of posts saying that they never updated but everything worked right on 4.2.2. I really wish someone could shed light on this issue.
Sent from my Nexus 4 using xda premium
selfinflicted1 said:
I was under the impression that the 33 radio caused all kinds of problems with 4.2.2. Are you sure you aren't on 4.2.1? Its crazy because I seen a lot of posts saying that they never updated but everything worked right on 4.2.2. I really wish someone could shed light on this issue.
Sent from my Nexus 4 using xda premium
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+1
Sent from my Nexus 4 using Tapatalk 2
Apparently the issue with CM 10.1 and the older radio is you lose autofocus in the CM camera (for example, might be more issues). Now, being in the UK, I have no need for the old radio as we don't have proper 4G here yet so I'm all 100% up-to-date and it works fine. Once 4G comes about I'll get a 'proper' 4G phone

Nexus 4 and LTE on 4.2.2

I saw the giant thread and was trying to find steps on how to do this with the 4.2.2 update which i had issues finding.
I was wondering if anyone can link me or point me in the right directions of doing this. I have not rooted or flashed an android phone before so some step by step guides will be good. This t-mobile HSPA and or 3g in Houston is terribly slow at some spots and times, it would be nice to have the LTE working.
Go through normal process of rooting, custom recovery etc....flash older radio version, flash this ROM. Most simple process I can direct you to.
http://forum.xda-developers.com/showthread.php?t=2267890
Sent from my Nexus 4 using xda app-developers app
It just needs to be reverted back to the older version in order for it to work?
sotorious said:
It just needs to be reverted back to the older version in order for it to work
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Click to collapse
you just need to revert the radio to an older version. the .33 and .27 radios are popular. you can do this, have lte, on any rom.
I guess its time to start doing my homework.

[Q] Needed: DEVS to fix issue# 58317 (radio reboot)

Hi XDA Dev's,
SInce I'm not capable myself and Google isn't to keen on helping us N4 owners with known issue # 58317 (see issuetracker https://code.google.com/p/android/issues/detail?id=58317 ) I'm calling out to the XDA community...
This issue is affecting probably most (if not all) users that use MVNO's, like Tele2 in the Netherlands. What happens is the GSM radio reboots without notice and comes up again but is stuck on the SIM pin (if enabled), leaving us without being able to receive any calls.
Google is aware of it, but gave it lo priority as they say 'it effects only a small number of people'. But as you can tell from the thread, there's PLENTY of people all over the world experiencing this issue.
In the thread is a link to the proposed fix for AOSP, posted by the owner of the issue. Is there anyone out there that can fix this by giving a flashable ZIP for either AOSP or JWR66Y from Google?
Thanks - here's hoping for the best!
You can also just flash another radio you know? .48 is working fine for me.
Sent from my Nexus 4 using xda app-developers app
Remcotjuuh said:
You can also just flash another radio you know? .48 is working fine for me.
Sent from my Nexus 4 using xda app-developers app
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Well... it's not the radio as you can read from all the posts in the issue tracker. Ofcourse I can stay on 4.2 and never update to 4.3 but that's kinda pointless when you have a nexus device? The issue is with the radio drivers, not the firmware and then only with MVNO SIM's. Simply flashing new radio firmware just won't cut it...
What provider are you on and what firmware?
I'm on 4.3 using the .48 radio, not 4.2. And it DOES fix it. I'm on Tele2, had exactly the same problem and flashing .48 fixed it for me.
Sent from my Nexus 4 using xda app-developers app
Remcotjuuh said:
I'm on 4.3 using the .48 radio, not 4.2. And it DOES fix it. I'm on Tele2, had exactly the same problem and flashing .48 fixed it for me.
Sent from my Nexus 4 using xda app-developers app
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Ok, well worth a try! Will flash when I find some time and let you know, thanks!
Remcotjuuh said:
I'm on 4.3 using the .48 radio, not 4.2. And it DOES fix it. I'm on Tele2, had exactly the same problem and flashing .48 fixed it for me.
Sent from my Nexus 4 using xda app-developers app
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Was on 4.3, seriously suffering from the simlock/heat/batterydrain problem. Now on Cyanogen Stable 10.1.2. The problem persists, it may even be worse. You say you flashed the .48 but not the 4.2? Which one? (Link?)
involver said:
Ok, well worth a try! Will flash when I find some time and let you know, thanks!
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you okay dota aye?
This happens on an AT&T SIM as well.
Well at first my hopes where up, after flashing .42 radio no issues for a few days. Alas... today I got the sim pin again. So back to square one...

T-Mobile LTE

I am interested in enabling T-Mobile LTE on my N4. Does it work smoothly like any other LTE enabled phone? In my research, I've found that there are two different zip files to flash. Which one has worked best for people? It appears that enabling LTE is a simple flash of the zip file. Am I correct? Thanks.
This has been covered thousands of times. But before this thread gets deleted, let me help you out. LTE on tmobile or att works flawlessly.
http://forum.xda-developers.com/showthread.php?t=2358931
im using the 98-33 radio on tmobile and have had 0 problems. you can find it here
http://forum.xda-developers.com/showpost.php?p=48224173&postcount=882
just flash and forget it. it should work! good luck
Do I need to update the radios after every software update or can I just flash once and forget it?
Since this will get deleted anyways, I will ask the stupid question I have. Bone stock 4.4.2 soon to be rooted with TWRP. Can I flash with a stock ROM and still make a wifi hotspot? I see something about needing init.d support or something like that.
ILowry282 said:
Do I need to update the radios after every software update or can I just flash once and forget it?
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No need to flash again.
SKYLINESSUCK said:
Since this will get deleted anyways, I will ask the stupid question I have. Bone stock 4.4.2 soon to be rooted with TWRP. Can I flash with a stock ROM and still make a wifi hotspot? I see something about needing init.d support or something like that.
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Yes
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I flashed the file. However the instructions state to change the network mode. I don't even see that option in the settings. I'm currently on 4.3
*#*#4636#*#* in dialer
Sent from my Nexus 7 using XDA Premium 4 mobile app

[Q] Only getting 1.5mb internet speeds on 12mb

Hi,
This is an odd one.
I get 12mb download speeds on my home wifi if i do a test from my laptop or girlfriends iphone. If I do the test on my Nexus i only get about 1.5mb.
If I reboot the router (Draytek) I get the full 12mb again for a few hours then it drops right back down to 1.5mb.
Now I know you are all thinking straight away its the router but I have recently changed this from a Linksy router to the draytek and had the same problem with that one, so it would appear it is my Nexus.
I am running PA with the latest Kernal for it.
Any ideas or help?
foxguard said:
Hi,
This is an odd one.
I get 12mb download speeds on my home wifi if i do a test from my laptop or girlfriends iphone. If I do the test on my Nexus i only get about 1.5mb.
If I reboot the router (Draytek) I get the full 12mb again for a few hours then it drops right back down to 1.5mb.
Now I know you are all thinking straight away its the router but I have recently changed this from a Linksy router to the draytek and had the same problem with that one, so it would appear it is my Nexus.
I am running PA with the latest Kernal for it.
Any ideas or help?
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Click to collapse
Try changing your Radio. Which Radio you are on? Latest is .98
sidnoit22 said:
Try changing your Radio. Which Radio you are on? Latest is .98
Click to expand...
Click to collapse
Thanks for the reply mate. Im new to this, how do I tell which Radio is installed and how do I update it if needs be?
foxguard said:
Thanks for the reply mate. Im new to this, how do I tell which Radio is installed and how do I update it if needs be?
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Click to collapse
In "About Phone" look for baseband (a.k.a. radio) version. But be careful, if you are using Jelly Bean ROM, your radio should be 0.84. If KitKat ROM, then the radio should be .97 or .98. Don't flash 97 or 98 on Jelly Bean ROM !!!
taodan said:
In "About Phone" look for baseband (a.k.a. radio) version. But be careful, if you are using Jelly Bean ROM, your radio should be 0.84. If KitKat ROM, then the radio should be .97 or .98. Don't flash 97 or 98 on Jelly Bean ROM !!!
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Click to collapse
Thanks for that,
im on PA which is still Jelly Bean isn't it?
But the radio is 0/84, is that what it should be?
foxguard said:
Thanks for that,
im on PA which is still Jelly Bean isn't it?
But the radio is 0/84, is that what it should be?
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Click to collapse
In "About Phone" look for "Android Version" if it's below 4.4 then you are on Jelly Bean (e.g., 4.3 or 4.2). I don't use PA ROM so I don't know which version currently for PA.
taodan said:
In "About Phone" look for "Android Version" if it's below 4.4 then you are on Jelly Bean (e.g., 4.3 or 4.2). I don't use PA ROM so I don't know which version currently for PA.
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4.3 is the one im on. Cheers
So any ideas on how to fix it?
foxguard said:
4.3 is the one im on. Cheers
So any ideas on how to fix it?
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Have you tried to wipe cache and dalvik cache in recovery? Also did you test your phone in different area because it depends on where you are compared to the cell signal tower.
taodan said:
Have you tried to wipe cache and dalvik cache in recovery? Also did you test your phone in different area because it depends on where you are compared to the cell signal tower.
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Have now done this and will see what happens )
Not sure I understand the second part though as im talking about my home wifi and not my 3g coverage.
foxguard said:
Have now done this and will see what happens )
Not sure I understand the second part though as im talking about my home wifi and not my 3g coverage.
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I found this information on Google's support forum:
I can hereby confirm that flashing back the radio from M9615A-CEFWMAZM-2.0.1700.84 (default for 4.3) to M9615A-CEFWMAZM-2.0.1700.48 (default for 4.2.2), whilst keeping the rest of 4.3, did NOT fix the wifi speed and connectivity problems on my phone.
I then proceeded to downgrade completely to 4.2.2 using the Google-supplied factory images, and I'm now getting 44 Mbit/s down and 5 Mbit/s up via 802.11n, where on 4.3 with either of the two radios, I couldn't even reliably finish the test (it would stop halfway, with the download speed estimated at 7 Mbit/s). Besides that, I've now been able to update tons of apps from Play, where with 4.3 this was not possible with either of the radios.
Just in case someone finds this, the version of Android on this Nexus 4 causing endless wifi problems is:
* Android 4.3
* baseband M9615A-CEFWMAZM-2.0.1700.84
* kernel 3.4.0-perf-gf43c3d9, 2013-06-17
* build number JWR66V
The version working well is:
* Android 4.2.2
* baseband M9615A-CEFWMAZM-2.0.1700.48
* kernel 3.4.0-perf-g7ce11cd, 2013-01-29
* build number JDQ39
You should use a different radio. I'd recommend the hybrid radios 33/84. Uses .33 radio for connections such as WiFi and data, whereas .84 radio is used for calls.
Sent from my Nexus 4 using xda app-developers app
foxguard said:
Hi,
This is an odd one.
I get 12mb download speeds on my home wifi if i do a test from my laptop or girlfriends iphone. If I do the test on my Nexus i only get about 1.5mb.
If I reboot the router (Draytek) I get the full 12mb again for a few hours then it drops right back down to 1.5mb.
Now I know you are all thinking straight away its the router but I have recently changed this from a Linksy router to the draytek and had the same problem with that one, so it would appear it is my Nexus.
I am running PA with the latest Kernal for it.
Any ideas or help?
Click to expand...
Click to collapse
i had the same issue, its not the radio , there is a zip file that you can flash which was ported from an LG phone, and you Wifi will be fine for sure.
Check this link out, i know you will hit thanks after this for sure , lol
http://forum.xda-developers.com/showthread.php?t=2300873
Ajaykumar21066 said:
i had the same issue, its not the radio , there is a zip file that you can flash which was ported from an LG phone, and you Wifi will be fine for sure.
Check this link out, i know you will hit thanks after this for sure , lol
http://forum.xda-developers.com/showthread.php?t=2300873
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Click to collapse
Ok, have done this..... will it work!
Ajaykumar21066 said:
i had the same issue, its not the radio , there is a zip file that you can flash which was ported from an LG phone, and you Wifi will be fine for sure.
Check this link out, i know you will hit thanks after this for sure , lol
http://forum.xda-developers.com/showthread.php?t=2300873
Click to expand...
Click to collapse
Nope didn't work.
CellPhish said:
You should use a different radio. I'd recommend the hybrid radios 33/84. Uses .33 radio for connections such as WiFi and data, whereas .84 radio is used for calls.
Sent from my Nexus 4 using xda app-developers app
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Where do I get these from and do I just flash I'm recovery please?
foxguard said:
Where do I get these from and do I just flash I'm recovery please?
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Click to collapse
I am going to give you the best info you're likely going to get as I suffer the same problem.
Don't reset you're rooter switch wifi on and off on the phone as it achieves the same results.
After a while of doing this it will improve the duration it locks on to fast wifi.
Also I think relocking the bootloader helps WHY I haven't a clue.
All I know is I have the same problem with the newest and fastest wifi available in my area and after trying everything flashable, settings in wifi and even patching my wifi from roms with my wifi working the results are.
1 go back to a stock 4.3 rom.
2 try what I suggested.
Sent from my Nexus 4 using XDA Premium 4 mobile app
---------- Post added at 01:21 AM ---------- Previous post was at 01:13 AM ----------
bladebuddy said:
I am going to give you the best info you're likely going to get as I suffer the same problem.
Don't reset you're rooter switch wifi on and off on the phone as it achieves the same results.
After a while of doing this it will improve the duration it locks on to fast wifi.
Also I think relocking the bootloader helps WHY I haven't a clue.
All I know is I have the same problem with the newest and fastest wifi available in my area and after trying everything flashable, settings in wifi and even patching my wifi from roms with my wifi working the results are.
1 go back to a stock 4.3 rom.
2 try what I suggested.
Sent from my Nexus 4 using XDA Premium 4 mobile app
Click to expand...
Click to collapse
To add to the above I don't know if its 4g capabilities being added to roms as I have tried everything but thats what I am looking at now even though I have flashed multiple radios.
Sent from my Nexus 4 using XDA Premium 4 mobile app
Just asking, but are you sure you didn't confuse MByte/s with Mbit/s? (Notice the lower and upper case B )
It would make sense as 12Mbit/s are 1.5MByte/s.
Ok guys, just so you know, Radio/Baseband has nothing to do with your WiFi connectivity or the transfers speeds you are getting on WiFi. All WiFi modules, drivers are present in the Kernel and NOT the modem/baseband. Hope this gives you clarity and prevent waste of your time fiddling with the modem to solve WiFi issues!!
prembox said:
Ok guys, just so you know, Radio/Baseband has nothing to do with your WiFi connectivity or the transfers speeds you are getting on WiFi. All WiFi modules, drivers are present in the Kernel and NOT the modem/baseband. Hope this gives you clarity and prevent waste of your time fiddling with the modem to solve WiFi issues!!
Click to expand...
Click to collapse
Flashed enough radio basebands and pulled enough files from the system to know where both live. I am talking about interference something causing the wifi to drop suddenly as if the network is strangled (but its not) there's a few phones that suffer the same problems as I have read all there posts.
It's something causing it to drop turning it on and off helps for a short time in my case about 3mins tops.
It could be anything I just find it a little strange that on a custom rom any soap ,cm and custom stocks this happens but not on a Google image. So something strange is happening who knows. Just wish I did.
Sent from my Nexus 4 using XDA Premium 4 mobile app
Is Nexus 4 getting wireless speed over 2.4mb/s?
This is the maximum that I can see at transferring of files to PC on same network.
I can't have it locked over 54mbps at settings of wireless.
Sent from my NookColor using Tapatalk 4

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