[Q] LTE capability on Nexus 4 after Android (stock) update? - Nexus 4 Q&A, Help & Troubleshooting

Hi there,
Happy owner of a Nexus 4 runing stock ROM with Android ver. 4.4.4, I rooted it few days ago with Towelroot app and unlocked the bootloader (with BootUnlock app) in order to enable the LTE fonction. I dit it with LTE Nexus 4 Modem Flasher app and it works well (my mobile carrier uses AWE for 4G). The custom recovery TWRP has been installed by the app prior to allow the flash of the modem driver/firmware. Now I am wondering about the coming update Lollipop which I really want to get.
As I could read in the forum, even if the system offers me the OTA update option, I should decline it since my custom recovery has been changed. Am I right? I have a doubt because I also read that people successfully updated OTA their rooted Nexus 4 even before Towelroot was existing and I guess this imply that they necessary changed their revovery...
As you may understand, I'm a bit newbie, I just rooted my phone and unlocked the bootloader without using the toolkit, and ideally I would avoid to do so.
My main concern is the following: updating to Android 5 (stock ROM either fron OTA or the tool kit), will I lose the benefit of LTE, or in other words, will the update change the modem firmware/driver?
Nota Bene: I don't really care about loosing the root privilege but I want to keep the LTE capability.
Thanks,
Guillaume.

guigzmtl said:
Hi there,
Happy owner of a Nexus 4 runing stock ROM with Android ver. 4.4.4, I rooted it few days ago with Towelroot app and unlocked the bootloader (with BootUnlock app) in order to enable the LTE fonction. I dit it with LTE Nexus 4 Modem Flasher app and it works well (my mobile carrier uses AWE for 4G). The custom recovery TWRP has been installed by the app prior to allow the flash of the modem driver/firmware. Now I am wondering about the coming update Lollipop which I really want to get.
As I could read in the forum, even if the system offers me the OTA update option, I should decline it since my custom recovery has been changed. Am I right? I have a doubt because I also read that people successfully updated OTA their rooted Nexus 4 even before Towelroot was existing and I guess this imply that they necessary changed their revovery...
As you may understand, I'm a bit newbie, I just rooted my phone and unlocked the bootloader without using the toolkit, and ideally I would avoid to do so.
My main concern is the following: updating to Android 5 (stock ROM either fron OTA or the tool kit), will I lose the benefit of LTE, or in other words, will the update change the modem firmware/driver?
Nota Bene: I don't really care about loosing the root privilege but I want to keep the LTE capability.
Thanks,
Guillaume.
Click to expand...
Click to collapse
I honestly can't speak for OTAs, as I've never done one on my Nexus 4. When I got mine, it already had 4.4.4, and I've been using custom ROMs since, and never back to stock.
But I can tell you that the radio survives ROM flashes, so I suspect it'll survive flashing the official 5.0 Lollypop ROM. You don't need to do an OTA to upgrade stock ROMs, you can flash them from recovery. You just have to wait until Google makes it publicly available and someone makes the flashable zip, or you can do it with your computer and ADB. I won't go through the steps here, since we haven't gotten there yet.
Regardless, even if it's not immediately, you will be able to update to 5.0 and have LTE, but wait on accepting an OTA or flashing until it's clear exactly how it'll all work.
---------- Post added at 11:50 PM ---------- Previous post was at 11:46 PM ----------
It occurs to me that people have been using the ported L preview on their Nexus 4s for a few months now. I haven't tried it, but maybe one that has could help you better. I'd search, but the L preview thread has 16000+ posts in it, and I'm just not that interested enough to try (I'm probably sticking with KK if/when Xposed works with ART).

OTA's often replace the modems, and since it can replace the entire /system directory it could potentially disable LTE enabler as well. And flashing stock images will replace your modems, and everything else in the phone like recovery, with the stock ones.
If LTE is really important to you, stay with what your using and do not OTA... wait until the new Lollipop radios are modified as a hybrid, then flash the stock Lollipop ROM, flash the radios and enabler, and you should be good to go. This is assuming they don't do something to break the OS so that hybrid radios are not possible.
Also, since you are on custom recovery, NEVER take an OTA... EVER... it will soft brick your device (it will be recoverable, just takes some work).
Personally, I was LTE for a while, and it was very hit and miss... would often drop to 3G and not go back to LTE unless I toggled in/out of airplane mode, and it destroyed my battery, cut my screen time in half. When I was on LTE my average screen time was 1.5-2.0 hours and I could not make it through a 16 hour day on a single charge, now that I removed them and want back to the stock 3G 1.03 radios, I get 3.0-3.5 hours screen time over 16 hours and it makes it though a full day, usually without a bump charge.

Related

Restoring to Factory Rom after rooting...

Sorry for the noob question, but Im a long term Blackberry user just switched to the N1...
Question about rooting. If I root the N1, understanding that once you root you can not "unroot", if I use a custom Rom but prefer to go back to the factory one, is that possible, or how do I do so ? also,
On custom Roms like Cyangen, can one still download updates from Google ? (ex. version 2.xxx with flash when it comes out) ?
thanks
You can unroot, you just can't relock your bootloader ATM.
Do a search in the development section and you'll find posts about how to flash everything back to stock. The only difference is you'll always have that little unlocked padlock at the bottom of your boot screen.
Typically you don't see updates from Google with a modded firmware, but you see updates from the ROM developer all the time.
Cool, thanks for the info...
So once rooted, if I do want to return to factory settings, I would just install the HTC N1 Rom as if I installed any other Rom, and everything would be back to factory ( except for bootloader ), enabling me to get OTA updates, etc...
I've heard with custom Rom's, people have had trouble with 3G or network/radio issues, and being in Canada, little nervous about that since the N1 was just released here.
Thanks
I don't know about all that in Canada, but you're best bet is to try the various ROM's (Cyanogenmod preferred), and then test different radios with those ROM's. It'll give you a better opportunity to find a radio that works for you in your area, considering there hasn't been an official radio update released through Google's channels.
I'm pretty new to all this too but to get OTA updates again, from google, I think you need the stock recovery too (ie: not Amon_Ra recovery).
i do miss the iphone for that reason press restore in itunes and its back to as it was out of the box ,this baby is a lot more tricky
I don't mean to turn this into an iPhone comparison thread so please don't take my comment as such, but NOT being forced to used iTunes to handle everything is much preferred for me, even if things aren't as straightforward. That said, as someone who obviously doesn't use iTunes, doing anything with the Nexus One wasn't as difficult because I didn't need to install any alternative media software just to get the phone working.
Finally about to take the plunge and root...Question is where do I find the factory N1 Rom ( stock Rom ) if I decide to switch back ( maybe when flash is released ).
Also, read that you can back up your existing Rom during the root process...Is the back-up a secondary app to install or included in the .zip packages that are needed to root ? how is the back-up done ?
thanks
SmokinSteveO said:
Finally about to take the plunge and root...Question is where do I find the factory N1 Rom ( stock Rom ) if I decide to switch back ( maybe when flash is released ).
Also, read that you can back up your existing Rom during the root process...Is the back-up a secondary app to install or included in the .zip packages that are needed to root ? how is the back-up done ?
thanks
Click to expand...
Click to collapse
You seem to only want flash - you do know, that features presented in OTA releases usually make their way into custom ROMS before or a few hours (at least a day) after the OTA. Himem (the ability to use all the RAM) is already out in mostly all ROMS, way before Google is releasing it - along with trackball colors.
Really, you don't need to worry..
Eclair~ said:
You seem to only want flash - you do know, that features presented in OTA releases usually make their way into custom ROMS before or a few hours (at least a day) after the OTA. Himem (the ability to use all the RAM) is already out in mostly all ROMS, way before Google is releasing it - along with trackball colors.
Really, you don't need to worry..
Click to expand...
Click to collapse
Well flash was just an example...my only concern is that I could be one of the
unlucky ones that experience problems after I root and install a Rom, so just the thought of having a stock Rom on hand is piece of mind.
Also, being in Canada on Rogers, just curious how my 3G ( radio ) will react to it.
I'm on Rogers too and still waiting to see if my phone is problem free before rooting. Let me know how it turns out when you take the plunge
I'm on Fido (essentially the same band/frequency as Rogers), Cyanogenmod 5.0.5.3 (latest version at this time), and I'm having no problems with the 3G connection whatsoever. No dropped calls, no switching to EDGE randomly or anything. Never flashed a different radio or anything.
I did have to manualy enter my APN info in order to get my data connection working, however (no biggie, just type in some info). I had to do that even straight out of the box, so it's not a custom ROM issue.

need some assistance with i337m and getting back to stock.

I have read a fair amount here, but I'm not getting entirely relevant info and am hoping for some help.
I THINK I have finally found the place for stock roms. sammobile.com???
Now a bit of background.
I bought this phone used a few days ago. When I had a look, it is already rooted, which I'm fine with.
It is running 4.4.2. I'd like to upgrade to 5.0.x. Gotta friend with the same model. That's what he recommends.
I can live with 4.4.2 if I have to, meaning if I can't upgrade.
Since this is new (to me) I can live with losing all user data. Only thing is my wifi password is long and random and a pain to type in, but that is about all I'll suffer.
I had removed some apps using debloater, mostly just to see, but have since restored them. Then tried to update, got the message, which essentially says "you've got a custom rom. No updates for you".
I know the phone is unlocked, but not sure if factory or by unlock code. Does it matter, and if so, how can I tell?
I know the previous owner had a fido sim, and I noticed some bell apps on here. If I've read correctly, that doesn't guarantee this was originally a bell phone. Is there any way I can tell? Right now I have no sim. I can shove in an old speakout sim that is deactivated.
So anyway
Model number SGH-I337M
Android Version 4.4.2
Baseband version I337MVLUFNI2
Kernel Version
3.4.0-2767305
[email protected] #1
Mon Sep 29 13:01:35 KST 2014
Build Number
KOT49H.I337MVLUFNI2
SE for Android Status
Enforcing SEPF_SHG-I337M_4.4.2_0032
Wed Oct 15 17:04:13 2014
Secure Boot status
Type: Samsung
I've downloaded ODIN, but not a ROM yet, since I'm not positive who's I should use.
Also, I had gone thru the guide to enable AWS. That seems to work, as it would take the sim at the wind kiosk. I'd like to keep that, but if I have to redo it, that is fine.
I trust it is not a good idea to upgrade to a "stock" 5.0.x by just flashing roms?
Thx for any help.
ok, another question. I just registered at sammobile, but they don't seem to have roms for the S4??? Are they hidden somewhere? Where can I get stock roms, if not there? Thx
Nevermind. You have to type in the device name. It just isn't on the pulldown list.
Another question you might find stupid.
If I update to (for example) the Bell Roms, do I have to have a valid Bell sim in order to do an update?
Well maybe 2 stupid questions.
I still have to use triangle away for flashing back to 4.4.2 don't I? I read somewhere that they (meaning Samsung) expected the count to be > 0 at some point but I don't remember at what version, and I can't seem to find it again.
So what do you guys do? Flash it a couple of times to get the count right?
If the phone is sim unlocked, it should remain permanently unlocked regardless of whether you flash custom or stock ROMs.
The easiest way to get to stock LP would be to flash the stock LP rom via Odin from here: http://www.sammobile.com/firmwares/database/SGH-I337M/
Before the first boot with the LP ROM, the phon should be factoru reset via stock recovery.
Doesn't really matter whether you flash Bell, Rogers, or Telus. The hardware used by all 3 carriers is the same. The only difference would be in the apps that are installed with each stock ROM.
audit13 said:
If the phone is sim unlocked, it should remain permanently unlocked regardless of whether you flash custom or stock ROMs.
The easiest way to get to stock LP would be to flash the stock LP rom via Odin from here: http://www.sammobile.com/firmwares/database/SGH-I337M/
Before the first boot with the LP ROM, the phon should be factoru reset via stock recovery.
Doesn't really matter whether you flash Bell, Rogers, or Telus. The hardware used by all 3 carriers is the same. The only difference would be in the apps that are installed with each stock ROM.
Click to expand...
Click to collapse
Thx. that should get me started anyway.
scott1256ca said:
Thx. that should get me started anyway.
Click to expand...
Click to collapse
I think I have reflashed properly. I'm downloading the update (probably to 5.0.1??) via phone now, but I noticed after I started that I have the warning triangle. So maybe the update will not install when it is done. I'll know in a couple of hours I guess.
So I should have run triangle away BEFORE the reflash? Or are you no longer supposed to run that? Or is there some android version after which you are no longer supposed to use it?
Thx
Well, phone seems to have updated to 5.0.1, which is what I wanted. With the update, the warning triangle is gone also.
So thanks again for your help. I guess I'll be on to other things here.

Nexus/pixel 6.x.x style rom, for rooted bootunlocked VZW_BPB1_ODEX_DEODEX_V9 SM-G900V

Sry about the terrible shorthand. Finally broke down and factory reset my verizon gs5. Before setting up i decided to roll it back, root it, and get a debloated PB1 rom from here:
https://forum.xda-developers.com/verizon-galaxy-s5/general/root-method-og5-ok3-t3290370
So, if like me, and you have the nov/dec VZW OTA update on your phone PJ2 if i recall, this link got me rolled back and rooted. This method added busybox which i didn't really understand, safestrap which i actually kinda liked, and initially kingroot then the flash went to superSU.
I kinda liked the marshmallow os a touch better with the google now launcher and everything verizon as removed as possible vs 5.x.x. Basically the verizon OTA update to marshmallow essentially bricked my phone (not enough space after like 3 years of never re-formatting). I love my tablet that essentially runs just a bare bones no BS google android marshmallow software similar to what a pixel has or nexus had.
Doin more reading looking for such a rom i found this link:
https://forum.xda-developers.com/ve...t/rd-unlocking-galaxys-s5-bootloader-t3337909
This successfully unlocked the bootloader. They omit that you should make sure you have the rom on he phone or sd card before starting. So before using odin make sure the rom is on the phone and matched the bootloader unlocker you wish to use. This method of flashing used TWRP recovery which i found to be...different than safestrap but functional all the same.
QUESTION 1
Is there a rom for the SM-G900V that is similar or identical to a non branded google device like how the pixel comes stock?
I haven't messed around with the phone since unlocking the bootloader and flashing it to the VZW_BPB1_ODEX_DEODEX_V9 using the TWRP Recovery. Basically if my best bet is a debloated stock but rooted vzw rom that is 6.x.x and then manually removing/deactivating the garbage from vzw apps i'll do it. But figured this was the place to ask if there was already a rom out there that works on the SM-G900V. Because i can easily put a rom that does the job instead of tinkering more than i have too.
QUESTION 2
Now that i used the SafeStrap_PB1_Bootloader_Unlock_AIO.zip and flashed VZW_BPB1_ODEX_DEODEX_V9.zip using the method from the second link. It APPEARS i can just load a 6.x.x rom and use TWRP Recovery to flash that. Am i mistaken? Will i need to do the unlock bootloader process over for the PD1 PF4 or whatever boatloader unlocker corresponds with the rom. OR...now that the bootloader is no longer verizon'ed can i basically swap roms to my hearts content as long as they do not also try to install a new bootlaoder??
I have no idea how to "tag" either poster from the links i mentioned but i'm certain many here as well as they could answer both questions easily.

Update Rooted Kit Kat ANI2

Ok, I bought a new Verizon S5 in July of 2015. I rooted it a couple days later using Towelroot. The CID is 11, so it has a locked bootloader. I never had a single issue with the phone, and honestly, never thought about doing any updates, as it just kept chugging along dependable every day. I recently retired the S5, as I bought a mint, used Note 4 and fell in love with it. I am getting ready to sell the S5, but want to fully update it to 6.0.1 Marshmallow DQH2. I am not worried about losing root, as I am selling the phone, and will probably remove root anyway. I have a few questions though:
1) Can I update from Kit Kat all the way to Marshmallow and the latest update, or do I have to do it in increments?
2) Is it easier to update, then remove root?
3) What would be the easiest way to update to DQH2?
4) Since its rooted, can I just download the stock DQH2 firmware and flash it in Odin and go from KK to MM?
4A) If it can be flashed as stated above, will I lose root?
4A-1) Is there a rooted DQH2 firmware that can be flashed?
Thanks in Advance!!!
0) Check if Reactivation Lock is turned OFF.
...
4) Flash this DQH2 and it will erase everything, including root.
4A) Yes.
4A-1) No.
Forget the rest of the questions.
P.S. The first boot after flashing will take 10-15 min. so be patient.
bbsc said:
0) Check if Reactivation Lock is turned OFF.
...
4) Flash this DQH2 and it will erase everything, including root.
4A) Yes.
4A-1) No.
Forget the rest of the questions.
P.S. The first boot after flashing will take 10-15 min. so be patient.
Click to expand...
Click to collapse
Thanks. Whats the highest I can update, and retain root? I am re-thinking things now, as the package disabler app I was using and very fond of.... has been updated, and evidently does not work like it used to. I used this app on my Note 4, and was so happy with being able to disable all the bloatware and OTA etc... that I didnt bother to root the Note 4. I thought that if I lost root upgrading the S5, I would just install the same package disabler app, so it wouldnt be a problem, as thats really the only reason I root.... to get rid of bloatware. I may want to keep root now though
widowmaker17 said:
Whats the highest I can update, and retain root?
Click to expand...
Click to collapse
BPB1, Android 5.0.
You may also like the idea to install a custom debloated 6.0.1 ROM without root. If you've decided not to sell the S5.
Just another viewpoint if you haven't updated the phone yet: there are buyers who look primarily for phones with earlier versions of android, and it could actually increase the value/selling chance of your phone if you keep it on an earlier version and advertise it as such.
This gives the purchaser the opportunity to install the version they might want, especially since it's relatively difficult to find a Verizon S5 (or any Verizon Samsung phone) with 1. an unlocked bootloader and 2. an earlier version of Android such as KitKat installed.
I know this doesn't necessarily answer your questions, but it might be of benefit.

Update help from 4.4.4 KitKat to 5.0 +

moded my i337 long ago with the following and it has been working fine.
Rooted,
installed safestrap 3.72 (TWRP V2.7.0 0)
I have nothing installed an any of the slots only the STOCK rom box s lit
I have 4.4.4 KitKat installed (I337UCUFNJ4)
I have also installed the fix to allow WIFI hotspot since I use consumer cellular and they allow hotspot for free. I also wanted NO updates that would eventially slow the phone to a crawl and possbily remove my wifi hotspot mod.
I now have some apps that need lolipop 5.0 minimum and I'd like tofin a way to upgrade this phone to that.
I'm not a power andriod user but do know computers and networking and am a techie by nature. I was able to do the above myself but have long forgotten the steps.
Do you have recommendations for the easiest and safest way to update to 5.0 or higher on this S4? I know want to retain the wifi hotspot mod. the rest of the stuff on the phone is normal stuff that can be reinstalled.
thanks
This thread may help: https://forum.xda-developers.com/ga...-to-update-to-i337oc3-5-0-1-keeproot-t3075814
cousindan said:
moded my i337 long ago with the following and it has been working fine.
Rooted,
installed safestrap 3.72 (TWRP V2.7.0 0)
I have nothing installed an any of the slots only the STOCK rom box s lit
I have 4.4.4 KitKat installed (I337UCUFNJ4)
I have also installed the fix to allow WIFI hotspot since I use consumer cellular and they allow hotspot for free. I also wanted NO updates that would eventially slow the phone to a crawl and possbily remove my wifi hotspot mod.
I now have some apps that need lolipop 5.0 minimum and I'd like tofin a way to upgrade this phone to that.
I'm not a power andriod user but do know computers and networking and am a techie by nature. I was able to do the above myself but have long forgotten the steps.
Do you have recommendations for the easiest and safest way to update to 5.0 or higher on this S4? I know want to retain the wifi hotspot mod. the rest of the stuff on the phone is normal stuff that can be reinstalled.
thanks
Click to expand...
Click to collapse
I was looking for the Oreo ROM. Is there any way to get an oreo custom ROM for my GS4? I contacted AT&T but they told me that they no more provide support for GS4. TIA.
The only way to get an Oreo ROM running is to be on the MDL bootloader. Since you're on NJ4 your phone was updated past MDL and thus you are now stuck. Since you are on kit kat, you can use safe strap to boot custom touchwiz ROMs or you can update to lollipop and boot ROMs with flash fire. You can jump around to a few different kit kat versions I think, but that's all you can do as your bootloader is locked. Unless you upgrade to lollipop that is then you can only jump around to lollipop versions.
audit13 said:
This thread may help: https://forum.xda-developers.com/ga...-to-update-to-i337oc3-5-0-1-keeproot-t3075814
Click to expand...
Click to collapse
+1 That's how I got mine to OK2 with root. This post provided the needed Flashfire app
https://forum.xda-developers.com/showpost.php?p=78037038&postcount=1089
A Mobile Hotspot App is also mentioned in this post
https://forum.xda-developers.com/showpost.php?p=76089302&postcount=1084
If you search the thread for "Mobile Hotspot" without the quotes you'll find 4 posts that talk about it. I believe that's what the "I337_OK2_TetherAddOn.zip" is for in the first post.:good:
Forgot to mention set your phones time/date to manual and set the date to before March of 2018 I think it is before installing and running Flashfire for it to work. That's also mentioned somewhere here.

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