Related
I flashed this TW 4.3 last night
http://forum.xda-developers.com/showthread.php?p=48048833#post48048833
And I already miss AOSP smoothness/faster feel. What's the easier way for me to get to any AOSP 4.3
Going thru other threads. It seems, If I try odin back to 4.1.x stock, it may not work/i may brick the phone.
Advise plz
P.S: Currently on I747UCUEMJB MODEM as part of this TW 4.3
paluinfusion said:
I flashed this TW 4.3 last night
http://forum.xda-developers.com/showthread.php?p=48048833#post48048833
And I already miss AOSP smoothness/faster feel. What's the easier way for me to get to any AOSP 4.3
Going thru other threads. It seems, If I try odin back to 4.1.x stock, it may not work/i may brick the phone.
Advise plz
P.S: Currently on I747UCUEMJB MODEM as part of this TW 4.3
Click to expand...
Click to collapse
Did you flash the mjb (4.3) bootloaders? If you did, you will brick by flashing backwards. If not from what I have read it is relatively safe. There is always a risk of bricking even with the simplest of tasks involving flashing.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
theramsey3 said:
Did you flash the mjb (4.3) bootloaders? If you did, you will brick by flashing backwards. If not from what I have read it is relatively safe. There is always a risk of bricking even with the simplest of tasks involving flashing.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Click to expand...
Click to collapse
NO I did not flash the bootloader. I was on Quantum 4.4 for quite some time.
I am planning to travel abroad in couple months. So, to unlock wanted to try TW ROM. hence picked this one (it didnt work though)
This is what I did from 4.4 quantum
Nandroid backup.
flashed the I747UCUEMJB Modem
wiped everything
flashed the ROM
flashed dkp test kernel for TW 4.3
Reboot.
As i took nandroid backup of 4.4 quantum. Now I wiped everything from this TW 4.3 and restored that backup.
So, currently i am on 4.4 quantum (through nand restore)
But phone baseband version says I747UCUEMJB. that's why i am asking the question here.
Could some one answer a few questions I have on how to go from rooted 4.1.1 to latest build. I have read and DL'd the zip from the "[LEAK] AT&T 4.3 UCUEMJ2 (Root & Knox versions)" thread and was wondering if the the rom can be loaded directly from CM recovery. Is the new bootloader required or optional?
Thanks
Zb
Model
SGH-I747
Android Version
4.1.1
Baseband
I747UCDLK3
Build
JR003L.I747UCDLK3
Recovery
CM 6
ZKornecki said:
Could some one answer a few questions I have on how to go from rooted 4.1.1 to latest build. I have read and DL'd the zip from the "[LEAK] AT&T 4.3 UCUEMJ2 (Root & Knox versions)" thread and was wondering if the the rom can be loaded directly from CM recovery. Is the new bootloader required or optional?
Thanks
Zb
Model
SGH-I747
Android Version
4.1.1
Baseband
I747UCDLK3
Build
JR003L.I747UCDLK3
Recovery
CM 6
Click to expand...
Click to collapse
Have you checked to see if you can get OTA update or update via the latest version of Kies? I was able to update from 4.1.1 to 4.3 with 2 different pre-rooted i747s - one officially via OTA and the other by flashing the same zips you refer to via cm recovery so maybe that answers your question. Before taking the one-way trip to 4.3, however, be sure you are done messing with your phone at the older firmware including unlocking, if required, as you may not be able to go back.
Larry2999 said:
Have you checked to see if you can get OTA update or update via the latest version of Kies? I was able to update from 4.1.1 to 4.3 with 2 different pre-rooted i747s - one officially via OTA and the other by flashing the same zips you refer to via cm recovery so maybe that answers your question. Before taking the one-way trip to 4.3, however, be sure you are done messing with your phone at the older firmware including unlocking, if required, as you may not be able to go back.
Click to expand...
Click to collapse
I wasn't able to update via Kies. If I use CM recovery is there a specific order I need to install with and can I install the new bootloader with CM Recovery or do I need to use odin?
ZKornecki said:
I wasn't able to update via Kies. If I use CM recovery is there a specific order I need to install with and can I install the new bootloader with CM Recovery or do I need to use odin?
Click to expand...
Click to collapse
I'm not aware there is any Odin flashable file for 4.3 yet. You may follow the steps in the link below for manual update via CM...
http://www.smartphonejam.com/2013/1...fficial-android43-i747ucuemjb-ota-update.html
You didn't say if you tried the OTA update? If you want to remain on stock, this is always the safest bet. If you are currently on official 4.1.1 you should be able to get this via WiFi with a valid AT&T sim card in your phone.
Me personally would avoid the official OTA update unless you're absolutely sure you want to keep it. Once you take the bootloader MJB you cannot flash any stock rom anymore unless you have an I747M then you can only flash the official 4.3.
I am on the MJ2 leak bootloader and have no issues, running S3Rx with the MJB modem phone runs great, if something happens I can simply flash anything I want to with Odin.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
theramsey3 said:
Me personally would avoid the official OTA update unless you're absolutely sure you want to keep it. Once you take the bootloader MJB you cannot flash any stock rom anymore unless you have an I747M then you can only flash the official 4.3.
I am on the MJ2 leak bootloader and have no issues, running S3Rx with the MJB modem phone runs great, if something happens I can simply flash anything I want to with Odin.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Click to expand...
Click to collapse
Exactly. I have also stayed away from the official 4.3. I have no idea why so many people around here just insist that their phone be on the latest update. Ok, the ones that had some major issues previously I could see, and yes you're going to have your exceptions whose phones will work just fine on 4.3. But all this 4.3 has done is create even more issues, with no flash-able firmware to go back to when something goes wrong. Some say there is no major reason not to update, but I say that there is no major reason to update, as most never give a reason to why they want to update. I just don't get it, other than these updates have become like new toys, just something new to play with.
shortydoggg said:
Exactly. I have also stayed away from the official 4.3. I have no idea why so many people around here just insist that their phone be on the latest update. Ok, the ones that had some major issues previously I could see, and yes you're going to have your exceptions whose phones will work just fine on 4.3. But all this 4.3 has done is create even more issues, with no flash-able firmware to go back to when something goes wrong. Some say there is no major reason not to update, but I say that there is no major reason to update, as most never give a reason to why they want to update. I just don't get it, other than these updates have become like new toys, just something new to play with.
Click to expand...
Click to collapse
shortydoggg thanks for your post and you actually hit the nail on the head. I can't think of reason I NEED to update, I just get bored and like to play. My warranty is up so voiding that isn't an issue and my 4.1.1 runs just fine, but by playing I learn so I like to play. 4.3 has a few nice features but if prevents the phone from being re-flashed then the risks most-likely aren't worth the benefits. I am just doing my due diligence, researching and asking questions. I really appreciate all the input and advice I get from forums such as this so I can make an intelligent decision.
ZKornecki said:
shortydoggg thanks for your post and you actually hit the nail on the head. I can't think of reason I NEED to update, I just get bored and like to play. My warranty is up so voiding that isn't an issue and my 4.1.1 runs just fine, but by playing I learn so I like to play. 4.3 has a few nice features but if prevents the phone from being re-flashed then the risks most-likely aren't worth the benefits. I am just doing my due diligence, researching and asking questions. I really appreciate all the input and advice I get from forums such as this so I can make an intelligent decision.
Click to expand...
Click to collapse
If you really want to try and want it to be reversible you can use the 4.3 leaked MJ2 bootloader if you decide you don't like the 4.3 stuff you can simply Odin back to stock. But if you use the MJB bootloader you cannot.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
theramsey3 said:
Me personally would avoid the official OTA update unless you're absolutely sure you want to keep it. Once you take the bootloader MJB you cannot flash any stock rom anymore unless you have an I747M then you can only flash the official 4.3.
I am on the MJ2 leak bootloader and have no issues, running S3Rx with the MJB modem phone runs great, if something happens I can simply flash anything I want to with Odin.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app
Click to expand...
Click to collapse
I was running the same set up with MJ2 OS on MJB modem and the system was running fine until I recently flashed TWRP and SU to root and now the phone keeps booting to TWRP. I've run reset and reboot to system several times and even reflashed the system and modem files to attempt a reset but the same thing keeps happening - booting to TWRP. Will appreciate all steers on how I can rectify this.
Thanks
Larry2999 said:
I was running the same set up with MJ2 OS on MJB modem and the system was running fine until I recently flashed TWRP and SU to root and now the phone keeps booting to TWRP. I've run reset and reboot to system several times and even reflashed the system and modem files to attempt a reset but the same thing keeps happening - booting to TWRP. Will appreciate all steers on how I can rectify this.
Thanks
Click to expand...
Click to collapse
You're on the MJ2 leak bootloader you can use Odin to flash a stock image on the phone if you can get it into download/Odin mode.
Sent from my SAMSUNG-SGH-I747 running S3Rx MJ2 bootloader MJB modem and it is smooth
---------- Post added at 09:31 PM ---------- Previous post was at 09:29 PM ----------
If it won't let you into download mode then format the internal SD card which should erase everything for the most part and flash everything fresh.
Sent from my SAMSUNG-SGH-I747 running S3Rx MJ2 bootloader MJB modem and it is smooth
theramsey3 said:
You're on the MJ2 leak bootloader you can use Odin to flash a stock image on the phone if you can get it into download/Odin mode.
Sent from my SAMSUNG-SGH-I747 running S3Rx MJ2 bootloader MJB modem and it is smooth
---------- Post added at 09:31 PM ---------- Previous post was at 09:29 PM ----------
If it won't let you into download mode then format the internal SD card which should erase everything for the most part and flash everything fresh.
Sent from my SAMSUNG-SGH-I747 running S3Rx MJ2 bootloader MJB modem and it is smooth
Click to expand...
Click to collapse
Thanks. It does get into download mode. Is there an Odin flashable file for the MJ2 and, if so, where can I find this? I'm wary about flashing an older ROM (e.g. 4.1.1) to avoid any further conflicts as I still have the official MJB modem or can this be done safely?
I've tried clearing the system and reflashing but it was the same result or perhaps I wasn't doing this the right way?
Larry2999 said:
Thanks. It does get into download mode. Is there an Odin flashable file for the MJ2 and, if so, where can I find this? I'm wary about flashing an older ROM (e.g. 4.1.1) to avoid any further conflicts as I still have the official MJB modem or can this be done safely?
I've tried clearing the system and reflashing but it was the same result or perhaps I wasn't doing this the right way?
Click to expand...
Click to collapse
I have been told by very reliable sources that you can Odin to an older version safely regardless of modem as long as the bootloader isn't MJB or MK5 so I am pretty confident it is safe. At this point there isn't too much to loose.
Sent from my SAMSUNG-SGH-I747 running S3Rx MJ2 bootloader MJB modem and it is smooth
---------- Post added at 11:47 PM ---------- Previous post was at 11:42 PM ----------
While you're there I would flash 4.1.1 and do the free unlock. If my laptop charger wasn't broken I would test it for you I would love to unlock my phone.
Sent from my SAMSUNG-SGH-I747 running S3Rx MJ2 bootloader MJB modem and it is smooth
theramsey3 said:
I have been told by very reliable sources that you can Odin to an older version safely regardless of modem as long as the bootloader isn't MJB or MK5 so I am pretty confident it is safe. At this point there isn't too much to loose.
Sent from my SAMSUNG-SGH-I747 running S3Rx MJ2 bootloader MJB modem and it is smooth
---------- Post added at 11:47 PM ---------- Previous post was at 11:42 PM ----------
While you're there I would flash 4.1.1 and do the free unlock. If my laptop charger wasn't broken I would test it for you I would love to unlock my phone.
Sent from my SAMSUNG-SGH-I747 running S3Rx MJ2 bootloader MJB modem and it is smooth
Click to expand...
Click to collapse
Thanks. Just tried Odining to 4.1.1 but it failed, however. Would you recommend wiping the system in TWRP and booting to download to try again?
Larry2999 said:
Thanks. Just tried Odining to 4.1.1 but it failed, however. Would you recommend wiping the system in TWRP and booting to download to try again?
Click to expand...
Click to collapse
Odining to an older ROM is apparently not an option as this is isn't working. Thankfully, the phone is still booting into both download and recovery modes without difficulty so there is hope. I flashed CWM recovery via Odin thinking the problem may perhaps be with TWRP. However, the result was the same and the phone kept booting back into recovery mode rather than to the system. I also tried to see if was the bootloader so I flashed the MJB bootloader as well as reflashed the MJ2 system zip. The flashings were successful so, at least, it's unlikely to be a bootloader conflict but still the system will not boot.
Will greatly appreciate steers from the community on how to get the thing back working. n Thanks
Larry2999 said:
Odining to an older ROM is apparently not an option as this is isn't working. Thankfully, the phone is still booting into both download and recovery modes without difficulty so there is hope. I flashed CWM recovery via Odin thinking the problem may perhaps be with TWRP. However, the result was the same and the phone kept booting back into recovery mode rather than to the system. I also tried to see if was the bootloader so I flashed the MJB bootloader as well as reflashed the MJ2 system zip. The flashings were successful so, at least, it's unlikely to be a bootloader conflict but still the system will not boot.
Will greatly appreciate steers from the community on how to get the thing back working. n Thanks
Click to expand...
Click to collapse
Finally got it back up and running today. Cant be sure what really led to the soft brick but I simply wiped out everything in TWRP mode and then re-flashed the (MJ2) system, modem and kernel zips. This time it worked, I'd tried the same thing before but without the kernel. Now I'm back to the same configuration as before.
Hi Guys. I got my T-Mobile Galaxy S4 in May of last year. I promptly (as soon as I got home) rooted it. It is on Baseband M919UVUAMDB and I am currently running a December 9 nightly of CM11 (4.4.1) because any newer versions cause an issue with sleep and Wifi. If my phone goes into deep sleep with WIFI on, my screen will completely freeze, requiring a battery pull.
Now I've tried multiple roms running TW based on 4.3 (Guessing they're based on the M919UVUEMK2 OTA), but they all drop data.
Now that M919UVUFNB4 is out, I was wondering what would happen if I flashed to that (waiting for a pre-rooted ROM)?
Will I have the same issues? I love CM, but TW is full of features I like to use and would like to swap back and forth if possible.
What are my options? I no longer have any backups of any stock roms (I do have a 4.2 TW ROM backed up that had NO issues. I believe it was deodexed as well, if that has to do with anything).
RazoE said:
Hi Guys. I got my T-Mobile Galaxy S4 in May of last year. I promptly (as soon as I got home) rooted it. It is on Baseband M919UVUAMDB and I am currently running a December 9 nightly of CM11 (4.4.1) because any newer versions cause an issue with sleep and Wifi. If my phone goes into deep sleep with WIFI on, my screen will completely freeze, requiring a battery pull.
Now I've tried multiple roms running TW based on 4.3 (Guessing they're based on the M919UVUEMK2 OTA), but they all drop data.
Now that M919UVUFNB4 is out, I was wondering what would happen if I flashed to that (waiting for a pre-rooted ROM)?
Will I have the same issues? I love CM, but TW is full of features I like to use and would like to swap back and forth if possible.
What are my options? I no longer have any backups of any stock roms (I do have a 4.2 TW ROM backed up that had NO issues. I believe it was deodexed as well, if that has to do with anything).
Click to expand...
Click to collapse
The data drops are because you have the MDB modem. If you want to run those 4.3 based ROMs, you need either the hybrid MK2 modem (reversible, knox-free) or the full MK2 modem (not currently reversible, installs knox). The same situation would exist with the MDL modem.
See this thread for instructions to install the hybrid modem: http://forum.xda-developers.com/showthread.php?t=2546024
I don't know, but I'd guess the situation will be similar with the new KitKat release. To run the new ROMs properly, you'll probably need the newest modem (either a hybrid or full). I'm fairly confident that you'll run into the same issues if you're on MDB, but again, this portion is speculation. MK2 might end up being sufficient, or NB4 might be required. I won't be surprised if a hybrid MDL/NB4 modem pops up soon.
Sent from my SGH-M919 using Tapatalk
Thank you, exactly the info I was looking for.
crawler9 said:
The data drops are because you have the MDB modem. If you want to run those 4.3 based ROMs, you need either the hybrid MK2 modem (reversible, knox-free) or the full MK2 modem (not currently reversible, installs knox). The same situation would exist with the MDL modem.
See this thread for instructions to install the hybrid modem: http://forum.xda-developers.com/showthread.php?t=2546024
I don't know, but I'd guess the situation will be similar with the new KitKat release. To run the new ROMs properly, you'll probably need the newest modem (either a hybrid or full). I'm fairly confident that you'll run into the same issues if you're on MDB, but again, this portion is speculation. MK2 might end up being sufficient, or NB4 might be required. I won't be surprised if a hybrid MDL/NB4 modem pops up soon.
Sent from my SGH-M919 using Tapatalk
Click to expand...
Click to collapse
Just to be sure, I can run this via ODIN, since it's not MK2, it's MD, right?
http://forum.xda-developers.com/showthread.php?t=2678774
RazoE said:
Just to be sure, I can run this via ODIN, since it's not MK2, it's MD, right?
http://forum.xda-developers.com/showthread.php?t=2678774
Click to expand...
Click to collapse
I think so, but I'm not 100% sure. It looks like the same deal as the hybrid I've been using, and that I linked in my first response in this thread, just with the NB4 GSM modem and the MDL bootloader instead of the MK2 modem and MDL bootloader.
I never want to be among the first to flash new radios though. I hold off until I see a LOT of success stories and a lot of devs recommending them.
Sent from my SGH-M919 using Tapatalk
Yeah, it's also the reason I never flash OTAs, and am on such an ancient baseband. Thanks again!
I need some help on how to update my Baseband Version/Modem.
My Current Baseband Version: I747UCDMG2
And i'm running CM11 Android 4.4.2 Kitkat.
sian23 said:
I need some help on how to update my Baseband Version/Modem.
My Current Baseband Version: I747UCDMG2
And i'm running CM11 Android 4.4.2 Kitkat.
Click to expand...
Click to collapse
I believe CM11 will work fine with 4.3 firmware and modems. I would suggest using the MJ2 firmware and MJB modem, at least until you have decided you need even newer than them. An advantage to MJ2 is that it can be downgraded if you ever have need for that. A link to it can be found in the OP of http://forum.xda-developers.com/showthread.php?t=2252932. Another advantage is that it was released prior to the release of KNOX. Not only will this firmware/baseband combo will run CM11, it will run TW based 4.3 roms and many TW based 4.4.2 roms.
If you are wanting to get to the latest firmware and baseband, do not use the MJ2 firmware. Many people would recommend you upgrading sequentially through MJB, NE4, and to NJ1. Links to the MJB firmware can be found in the same post as the MJ2 I linked. Enewman17 has a thread regarding upgrading to NE4 firmware. http://forum.xda-developers.com/galaxy-s3-att/general/ucuemjb-to-ucufne4-firmware-update-t2808654
If you have an interest in unlocking your phone from your carrier, do it prior to upgrading to MJB and beyond. Once reaching MJB it can only be unlocked by your carrier or by using a paid service.
dawgdoc said:
I believe CM11 will work fine with 4.3 firmware and modems. I would suggest using the MJ2 firmware and MJB modem, at least until you have decided you need even newer than them. An advantage to MJ2 is that it can be downgraded if you ever have need for that. A link to it can be found in the OP of http://forum.xda-developers.com/showthread.php?t=2252932. Another advantage is that it was released prior to the release of KNOX. Not only will this firmware/baseband combo will run CM11, it will run TW based 4.3 roms and many TW based 4.4.2 roms.
If you are wanting to get to the latest firmware and baseband, do not use the MJ2 firmware. Many people would recommend you upgrading sequentially through MJB, NE4, and to NJ1. Links to the MJB firmware can be found in the same post as the MJ2 I linked. Enewman17 has a thread regarding upgrading to NE4 firmware. http://forum.xda-developers.com/galaxy-s3-att/general/ucuemjb-to-ucufne4-firmware-update-t2808654
If you have an interest in unlocking your phone from your carrier, do it prior to upgrading to MJB and beyond. Once reaching MJB it can only be unlocked by your carrier or by using a paid service.
Click to expand...
Click to collapse
If i was to flash NE4,should i flash MG2 to MJB first and then flash NE4?
And also,do i have to do a factory reset while flashing these files?
sian23 said:
If i was to flash NE4,should i flash MG2 to MJB first and then flash NE4?
And also,do i have to do a factory reset while flashing these files?
Click to expand...
Click to collapse
Yes, I would recommend incremental updating: MG2 > MJB > NE4; as shown in the second thread I linked.
I am only on the 4.3 leaked firmware and official 4.3 baseband, I have not updated to NE4 at this point. But, I was on the 4.1.2 stock rom when I updated to the MJ2/MJB firmware-modem combination. I went back into that rom with no factory reset and no wipes. After a couple of days with no issues I flashed a custom 4.3 rom. I did do the recommended reset and wipes in the flashing process, that was due to the rom, not the firmware and baseband. Also, the link does not suggest resetting or wiping in the upgrade of firmware and modem. If you have any issues after flashing, then I would suggest the factory reset and wipes with possibly even a reflash of your rom.
dawgdoc said:
Yes, I would recommend incremental updating: MG2 > MJB > NE4; as shown in the second thread I linked.
I am only on the 4.3 leaked firmware and official 4.3 baseband, I have not updated to NE4 at this point. But, I was on the 4.1.2 stock rom when I updated to the MJ2/MJB firmware-modem combination. I went back into that rom with no factory reset and no wipes. After a couple of days with no issues I flashed a custom 4.3 rom. I did do the recommended reset and wipes in the flashing process, that was due to the rom, not the firmware and baseband. Also, the link does not suggest resetting or wiping in the upgrade of firmware and modem. If you have any issues after flashing, then I would suggest the factory reset and wipes with possibly even a reflash of your rom.
Click to expand...
Click to collapse
Thanks!Updated it to MJB without Factory Reset.
I'm going to install NE4 when CM12 comes out.
http://forum.xda-developers.com/showthread.php?t=2968854
unofficial, but working they say.
"all I can really do, is stay out of my own way and let the will of heaven be done"
mrrocketdog said:
http://forum.xda-developers.com/showthread.php?t=2968854
unofficial, but working they say.
"all I can really do, is stay out of my own way and let the will of heaven be done"
Click to expand...
Click to collapse
And this is the other unofficial CM12 for the d2att
http://forum.xda-developers.com/galaxy-s3-att/orig-development/rom-cm12-d2att-alpha-builds-t2959561
Are those unofficial builds safe?
Like for example i flashed it on my phone,and CM12(official came out).
Can i flash Unofficial CM12 -> Official CM12 without errors?
sian23 said:
Are those unofficial builds safe?
Like for example i flashed it on my phone,and CM12(official came out).
Can i flash Unofficial CM12 -> Official CM12 without errors?
Click to expand...
Click to collapse
i personally have never flashed one of the cm12 unofficial builds. i suggest you read thru the threads and see if people are having issues or not and then decide. i would also definitely make a backup of current setup if did decide to try.
if you did a full wipe between unofficial and official , i would imagine to be most sure way to avoid errors.
imho there is ALWAYS a risk in flashing/rooting/modding,etc.
good luck with whatever you decide.
"all I can really do, is stay out of my own way and let the will of heaven be done"
mrrocketdog said:
i personally have never flashed one of the cm12 unofficial builds. i suggest you read thru the threads and see if people are having issues or not and then decide. i would also definitely make a backup of current setup if did decide to try.
if you did a full wipe between unofficial and official , i would imagine to be most sure way to avoid errors.
imho there is ALWAYS a risk in flashing/rooting/modding,etc.
good luck with whatever you decide.
"all I can really do, is stay out of my own way and let the will of heaven be done"
Click to expand...
Click to collapse
Mhmm,my decisions made up,and i should wait ti'll they released the official CM12...i think they would release it soon.
But i would make a research about it.
I have an ATT S3 which had 4.1.1 firmware before I rooted, flashed a ROM, etc. I'm having a GPS issue, but this doesn't seem to be the usual GPS issue S3 users encounter. From my research, I've seen S3 users stating that GPS works for them, they flash a certain ROM, and all of a sudden it doesn't work at all on any ROM (until they either tighten the screws in the phone, or reflash stock firmware in ODIN, or something like that). GPS works fine for me--I get a satellite signal fairly quickly, and the signal is strong enough to be accurate... but only on Jellybean ROMs. If I flash any sort of Kitkat ROM or newer, GPS can never get a signal. However, once I flash back to any ROM that is Android 4.3.1 or below, it starts working fine again.
I'm thinking this is related to the 4.1.1 firmware I had on here before flashing ROMs. I had a very similar issue with radios and getting cellular signal. With the 4.1.1 radios, I was able to get signal just fine on 4.3.1 ROMs and below, but Kitkat or anything above would not be able to find a signal. I flashed a newer radio in TWRP and signal-finding now works fine on all ROMs. [Side note that potentially is related, my i747 is unlocked and I'm using it with a T-Mobile SIM] Would flashing 4.3 stock firmware, which would perhaps give my phone "newer GPS radios" for lack of a better term, fix this issue? I don't want to leave 4.1.1 firmware if I don't have to, since apparently 4.1.1 firmware is more desirable, and once you go to 4.3 you can't come back down.
I think you have summarized it well. I have seen others comment about running newer ROMs on older firmware and modems with issues related to bluetooth, gps, and wifi. Firmware and modem upgrades fixed there problems.
You have already taken care of the greatest reason I have seen regarding having the 4.1.1 firmware, sim/carrier unlocking the device. From all I have read, that unlock is permanent no matter what rom changes and wipes you may do in the future. I guess a jtag or mobo swap would remove the unlock.
The drawbacks with the official 4.3 release (MJB) are Knox and the inability to downgrade. Knox seems to be in the official ROM and not in the firmware. I say this because the custom TW roms, 4.3 or 4.4.2, come without Knox. enewman17 has even removed Knox from some of his stock rom images. The same holds true for the three official Kitkat releases, NE4, NJ1, and NJ2: Knox and no downgrade. There is an extra kicker with the 4.4.2 releases, the modems will brick the phone if their version does not match the firmware version.
There is one thing you could do if you did not want to commit to MJB. Prior to MJB being released there was a leaked 4.3 stock rom with firmware and modem. Several custom TW roms were developed from it and you can still get the firmware and modem files in some of the threads. The short code for that release was MJ2. The great thing about the firmware with this release is that you can still downgrade it. You can also run the MJ2 firmware, (firmware = bootloader in the way I use the terms) with the MJB modem (modem = baseband = radio). The MJ2/MJB combination is downgradeable. This bootloader/modem combination file can be found in the OP of some of the ROM threads by loserskater and others. Even better, there are several custom TouchWiz based KitKat ROMs that will run on this MJ2/MJB combination, as long as you use one of two custom kernels; one is by ibuddler and the other is by ktoonsez. Ktoonsez has his own thread, just be certain to grab the correct kernel. He has downloads for TW and CM/AOSP kernels for several android versions. Links to ibuddler's kernel can be found in the Likewise ROM thread, IIRC. I know these kernels worked with NE4 TW ROMS and the MJ2/MJB combo. I haven't seen mention of if they will work with NJ1 or NJ2 based ROMS.
It could be that Ktoonsez' CM/AOSP 4.3 kernels will provide the same functionality with current CM/AOSP roms. At one point CM/AOSP roms based on Kitkat stopped working with the 4.3 bootloader, it was either November of 2014 or 2013. I have never seen mention of LP or MM roms working with the 4.3 bootloader, regardless of the kernel.
A reason to consider running a newer ROM is the Stagefright fixes to be found in them, incomplete as that may be. I haven't seen the fixes mentioned as incorporated into any of the TW based ROMs other than enewman's stock image. CM11 does have the fixes but seems to require a 4.4.2 bootloader and modem.
Something else that can be used to fix gps problems is an app called GPS Test. After an update or flash, many people have encountered gps issues, and often all you have to do is open the app and let it find all the satellites it can. Then open maps and it should get a quick location fix. (You may or may not have to clear data on maps or other gps related apps first). You can Uninstall the app afterwards as it only needs to be done once.
This doesn't always work, but it has enough to be a worthwhile alternative to try before flashing.
Also, I've noticed on more recent builds, gps/maps just can't seem to get a location fix. If you're in a bind, just leave it running for a bit and sometimes it'll start working after a while. Again, this isn't always the case, but it's worth knowing/trying if you find yourself lost or in a bind and cant do any real work/troubleshooting.
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Thanks for the help from both of you! I tried the GPS fix app and unfortunately it didn't work. I'll give MJ2 firmware a go.
Just to confirm before I flash...MJ2 provides all MJB 4.3 radios and such, while retaining the ability to downgrade to 4.1.1 if I wish? I just want to be 100% sure before I flash this.
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jasonmerc said:
Just to confirm before I flash...MJ2 provides all MJB 4.3 radios and such, while retaining the ability to downgrade to 4.1.1 if I wish? I just want to be 100% sure before I flash this.
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Click to collapse
Yes, I did this myself. No bad side effects observed.
---------- Post added at 08:07 PM ---------- Previous post was at 08:02 PM ----------
Well, actually, I used the flashable zip that contained the MJ2 bootloader and the MJB modem. I downgraded both back to 4.1.1 to do the free unlock. I downgraded, confirmed downgrade, performed the unlock, and then went back up to MJ2 bootloader and MJB modem. I have since upgraded to NE4 for bootloader and modem.
dawgdoc said:
Yes, I did this myself. No bad side effects observed.
---------- Post added at 08:07 PM ---------- Previous post was at 08:02 PM ----------
Well, actually, I used the flashable zip that contained the MJ2 bootloader and the MJB modem. I downgraded both back to 4.1.1 to do the free unlock. I downgraded, confirmed downgrade, performed the unlock, and then went back up to MJ2 bootloader and MJB modem. I have since upgraded to NE4 for bootloader and modem.
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Click to collapse
I'm confused once again, and I know I shouldn't be...
I did the free unlock in 4.1.1, so will going to this MJ2 un-do the unlock with the new radio?
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jasonmerc said:
I'm confused once again, and I know I shouldn't be...
I did the free unlock in 4.1.1, so will going to this MJ2 un-do the unlock with the new radio?
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Click to collapse
Sorry about creating confusion.
Your Unlock, free or otherwise, is permanent - or so I have read. Going to MJ2 or any of the newer bootloader and modems should not change your unlock status.
I meant that I was already on MG2 (4.1.2) before learning of the free unlock. From MG2 I was able to downgrade to 4.1.1, do the unlock and then upgrade to the MJ2 bootloader and MJB modem. Months after that I again downgraded to 4.1.1 with no issues. I upgraded that same day to MJB and then to NE4 in order to install CM11.
dawgdoc said:
Sorry about creating confusion.
Your Unlock, free or otherwise, is permanent - or so I have read. Going to MJ2 or any of the newer bootloader and modems should not change your unlock status.
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No problem at all. It's not you, its me XD
I'll flash MJ2 when I get home later tonight. I appreciate the help given by you (and others). This S3 forum is definitely one of the more friendly forums I've come across--much more patient with noobs like myself. Thanks for the help!
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I found a page on galaxys3root.com with links to 3 files... Stock 4.3 MJ2 with root (and I think no KNOX as well), MJ2 modem, and Insecure 4.3 kernel. Since these are all separate files I have to reboot to recovery and flash each one individually. I'm assuming this is what I'm looking for. If it isn't, then feel free to chime in and tell me to stop, since the downloads are probably going to take a very long time to complete (on my Windows XP netbook from 2011).
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jasonmerc said:
I found a page on galaxys3root.com with links to 3 files... Stock 4.3 MJ2 with root (and I think no KNOX as well), MJ2 modem, and Insecure 4.3 kernel. Since these are all separate files I have to reboot to recovery and flash each one individually. I'm assuming this is what I'm looking for. If it isn't, then feel free to chime in and tell me to stop, since the downloads are probably going to take a very long time to complete (on my Windows XP netbook from 2011).
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I recall seeing that page before I first rooted my S3, but I didn't use it.
Since you have TWRP you could flash the MJ2/MJ2 bootloader and modem or the MJ2/MJB bootloader and modem and not lose the ability to downgrade. There are download links in several ROM thread OPs, the ROMs I recall offhand in S3RX by loserskater and TMS3 (don't recall the dev). You could root by flashing the SuperSu.zip from TWRP. The link is in the OP of the stable thread.
I think this is what I did: custom recovery and then SuperSu.zip while still on stock. Later I went to the TMS3 4.3 rom while on MJ2/MJB. I regained root with the same method after the downgrade and subsequent upgrades I mentioned above.
Problem solved. Can now acquire GPS signal through Waze on 4.4.4 Quantum 5 ROM. I appreciate the help.
EDIT: Also working in CM12.1
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