Confused about modems? - G3 Q&A, Help & Troubleshooting

My d851 is currently rooted and running Lineage 14. It originally was running 30d, which I rooted with kingroot, installed twrp with flashify, and then finally installed Lineage through the twrp recovery.
My question is, does it make sense to upgrade the modem of my d851 with the modem from 30E from here? If so, how would I go about doing that while keeping Lineage? Just flash the modem file in twrp? Or would I need to flash the bootloader as well?

Related

[Q] Updating a already Rooted Galaxy S3 that's on 4.1?

I rooted my dad's phone a while back ago so he can use tethering in case of emergencies etc. He recently got a smart watch and I wanted to updated it so that he can use it. But it has not been touched since that day. I essentially want rooted stock rom, I'm unaware of where to find that the closest I can find is StockMod kitkat. Which seems to not work on ATT phones? I just want to make sure that I don't brick his only phone on christmas. So is there something I should be aware of?
His model is SGH-i747
Baseband
i747UCDLK3
Build number
jro03
So how do I go about upgrading it? Can I just flash TWRP and flash any rom using TWRP?
I found this, so I should install new TWRP, then flash a specified kernel then flash rom? would this be safe route?
Some of the latest ROMs require a 4.4.2 bootloader and modem.
The simplest and safest way to get the latest bootloader may be to flash back to unrooted stock 4.1.1 and run OTA updates until the phone is running the latest KK ROM. You can then flash TWRP or CWM and a custom ROM.
audit13 said:
Some of the latest ROMs require a 4.4.2 bootloader and modem.
The simplest and safest way to get the latest bootloader may be to flash back to unrooted stock 4.1.1 and run OTA updates until the phone is running the latest KK ROM. You can then flash TWRP or CWM and a custom ROM.
Click to expand...
Click to collapse
Would this require flashing with ODIN? I just want it so that it works with root is not required anymore.
Yes, you would flash the 4.1.1 stock ATT ROM via Odin. I prefer Odin 3.07.
You cannot install OTA updates with root.
You can try flashing just the bootloader and modem but I prefer the long slow route of OTA updates.
I rather do it this way, manually so my dad can enjoy it today. I was wondering how can I update it's TWRP? it's at 2.3 but the TWRP manager keeps crashing when I update it.
I highly recommend the latest d2lte version of Philz Touch for recovery.
https://goo.im/devs/philz_touch/CWM_Advanced_Edition/d2lte/
Ok I ****ed up, flash that kernel and did whatever and bam ****ed up. Not working... ****, I still ahve download mode and Recovery but it will not boot into the OS. I get a flash of samsung and then nothing else happends...****
I decided to flash stock DLK3 in odin. Then let the updates take it course (my dad doesn't need root) Where Can I find the file?
The stock ATT firmware is on sammobile.com.
If you want root, OTA to the latest 4.4.2, install Philz, flash supersu via recovery.

[Q] Which Firmware W/ Fresh SlimKat 9 Stable Install

Background: I attempted to update from SlimKat 7.0 stable to 9.0 stable and discovered my apn's were missing and when I try to add them manually it fails to save. I have also found others with this same issue but none have an easy fix. I'm on UCDLK3 firmware, after restoring to previous state using nandroid backup apn's are present. If I try to flash any ROM (even other than Slim) my apn's are missing, even a dirty flash of 7.0 over 7.0. I know I can fix this by flashing stock UCDLK3 and root/twrp/flash slim 9 and everything will likely work fine. I plan to do just that but want to make sure I'm doing things as smart and clean as possible. There is a lot of info out there and I'm finding it hard to sift through old stuff and find the current state of things.
Question: Is there an actual advantage if I upgrade the firmware from UCDLK3 to UCUEMJB while still planning to use SlimKat 9 Stable with BMS kernel and TWRP recovery? Are there any disadvantages? Either way what is the shortest path to get back to stock (either LK3 or MJB) and flash SlimKat?
Thanks
Your APN may not be sticking because your modem and bootloader may be too outdated.
Some of the latest CM11 and AOSP ROMs require a KK bootloader and modem.
And then there are some roms that require at least a 4.3 bootloader and modem, either the MJ2 (leaked) or MJB (official) bootlaoder/modem combos. I have seen mention of these working in some OPs and in the body of other threads. In some of the later TW ROMs you may have to use a custom kernel like kt747 or iBuddler's. I don't know if any kernel other than the stock in SlimKat and AOSP ROMs would be needed with the MJ2/MJB firmware and modem.
I don't know of any advantages other than some of the ROMs require firmware newer than DLK3 to properly boot, receive data, or have a working wifi. As far as disadvantages, KNOX was introduced with the MJB firmware and stock ROMs, once going to MJB or newer firmware you can not make firmware downgrades without a very real risk of hardbricking your phone. Also you will need to insure your baseband and modem versions match. If they do not you risk hardbricking of another variety.
I had not yet realized that the newer AOSP and CM11 required you to go all of the way to NE4, thank Audit.
Just wanted to close the loop on this thread and say thanks for the assistance!
I now have my phone working properly on SlimKat 9; it really was just the firmware not being compatible with newer ROMs as many have suggested. Here is the sequence I followed to do it but really it probably only needed a twrp flash of the mjb firmware and the ROM install:
1. Used odin to restore to stock LK3 (only because I had messed with things so much and wanted a clean slate)
2. Used odin to install TWRP 2.7.1.0 recovery
3. Rooted with SuperSU 2.40 using TWRP
4. Flashed combined MJB modem & bootloader using TWRP
5. Flashed SlimKat 9 using TWRP
6. Flashed Slim GApps using TWRP
7. Rooted with SuperSU 2.40 using TWRP (Lost root after flashing ROM)
thanks for posting fix. am sure it will help others. audit13 and dawgdoc , thank you for continued help with the awesome Slll. :good:
"all i can really do , is stay out of my own way and let the will of heaven be done"
jeff.leonard said:
Just wanted to close the loop on this thread and say thanks for the assistance!
I now have my phone working properly on SlimKat 9; it really was just the firmware not being compatible with newer ROMs as many have suggested. Here is the sequence I followed to do it but really it probably only needed a twrp flash of the mjb firmware and the ROM install:
1. Used odin to restore to stock LK3 (only because I had messed with things so much and wanted a clean slate)
2. Used odin to install TWRP 2.7.1.0 recovery
3. Rooted with SuperSU 2.40 using TWRP
4. Flashed combined MJB modem & bootloader using TWRP
5. Flashed SlimKat 9 using TWRP
6. Flashed Slim GApps using TWRP
7. Rooted with SuperSU 2.40 using TWRP (Lost root after flashing ROM)
Click to expand...
Click to collapse
When you restored to LK3, what Firmware version were you coming from? I'm looking to go to LK3 from the NJ1. However there seems to be cautionary red flags all over the place due to bootloader changes that were made in 4.3.
The OP was already on LK3 with a custom ROM.
Since you are on NJ1, you cannot downgrade the bootloader.

help to install lolipop

hi i have one lg g2 ls980 with zvc firmware. it is rooted with towelroot and twrp installed with autorec.apk.
i want to install lolipop on it but not finding any right guide as i am not sure that i can install lolipop directly on zvc or not.
so kindly guide me. thanks
arunkarnwal1981 said:
hi i have one lg g2 ls980 with zvc firmware. it is rooted with towelroot and twrp installed with autorec.apk.
i want to install lolipop on it but not finding any right guide as i am not sure that i can install lolipop directly on zvc or not.
so kindly guide me. thanks
Click to expand...
Click to collapse
Here is the easiest thing. Update TWRP, backup. Download zv8 radio, ROM for ls980, gapps(some prefer pa gapps minimal).
Wipe, flash ROM, flash radio, flash gapps.
Reboot and wait.
Reason for new TWRP. Backs up radio. You can go back to your previous without concern for radio.
Is this confirmed working? I've been having the same issue, but I flash the radio, then rom and gapps, and TWRP loses my backups, have to flash the .tot again.
Ok, I tried this out and it works perfectly Follow the exact method in the second post. If you installed TWRP with AutoRec you will be on JB bootloader, make sure you use the ZV8 radio, which is the JB radio. For GSM unlock just dial *#*#4636#*#* and select GSM Only. Good day all.
secret.animal said:
Here is the easiest thing. Update TWRP, backup. Download zv8 radio, ROM for ls980, gapps(some prefer pa gapps minimal).
Wipe, flash ROM, flash radio, flash gapps.
Reboot and wait.
Reason for new TWRP. Backs up radio. You can go back to your previous without concern for radio.
Click to expand...
Click to collapse
what's the easiest way to go about updating TWRP? it's been a while since I've been truly active in phone customization.
Juls317 said:
what's the easiest way to go about updating TWRP? it's been a while since I've been truly active in phone customization.
Click to expand...
Click to collapse
Just download the latest TWRP zip and flash it while in your current version of TWRP, then reboot.
http://forum.xda-developers.com/showthread.php?p=55892383

[Q] STuck at boot logo. Want to flash stock but don't know firmware

Hi I need help. I recently got this phone.
Rooted it with stump root, and flashed TWRP 2.8.4 using flashify.
I tried to flash a custom rom, but the wiping data part had an error. Stupidly enough, I proceeded to flash the rom zip and it got stuck flashing so I had to power it off. Now my phone is stuck on the boot logo. The only thing I can do with it is turn it off, or enter download mode. But I can't enter recovery mode. I read somewhere that it is possible to go back to stock recovery using the flashtool. Problem is I don't know which firmware I have. The only information I had about the firmware was that it was ls980vze because that's what I saw when I was flashing something. How do I deal with this? :crying:
p/s if there's a way that I can access twrp, maybe that' would work because I made a nandroid backup before. Don't know if that's useful though.
zach_95 said:
Hi I need help. I recently got this phone.
Rooted it with stump root, and flashed TWRP 2.8.4 using flashify.
I tried to flash a custom rom, but the wiping data part had an error. Stupidly enough, I proceeded to flash the rom zip and it got stuck flashing so I had to power it off. Now my phone is stuck on the boot logo. The only thing I can do with it is turn it off, or enter download mode. But I can't enter recovery mode. I read somewhere that it is possible to go back to stock recovery using the flashtool. Problem is I don't know which firmware I have. The only information I had about the firmware was that it was ls980vze because that's what I saw when I was flashing something. How do I deal with this? :crying:
p/s if there's a way that I can access twrp, maybe that' would work because I made a nandroid backup before. Don't know if that's useful though.
Click to expand...
Click to collapse
Okay, quick and easy.
There is a zve tot, though before we do much. Custom ROM as in which one?
Anything CM based is radio zv8, if it is a cloudyfa ROM; you can be zva to zve radio.
So depending on which can save trouble.
Root, depends on which version you are. Zv8 - go with ioroot25. Zve - use stump root.
Next thing, forget flashify. Sometimes it works sometimes it doesn't. Tried and true method, Auto-rec. Only after root.
Upgrade TWRP through TWRP by gator's zip of bumped and such. Or use TWRP app.
Again if your zv8, flash your CM based ROM of choice.
Zva-zve, flash your stock based like cloudyfa's Roms and such.
secret.animal said:
Okay, quick and easy.
There is a zve tot, though before we do much. Custom ROM as in which one?
Anything CM based is radio zv8, if it is a cloudyfa ROM; you can be zva to zve radio.
So depending on which can save trouble.
Root, depends on which version you are. Zv8 - go with ioroot25. Zve - use stump root.
Next thing, forget flashify. Sometimes it works sometimes it doesn't. Tried and true method, Auto-rec. Only after root.
Upgrade TWRP through TWRP by gator's zip of bumped and such. Or use TWRP app.
Again if your zv8, flash your CM based ROM of choice.
Zva-zve, flash your stock based like cloudyfa's Roms and such.
Click to expand...
Click to collapse
I tried to flash Validus ROM so i'm guessing that's zv8? I am rooted btw. Wait so you can upgrade twrp by flashing another twrp file? When I used flashify, after flashing the 2.8.4 bumped twrp it rebooted to my current twrp 2.7.0 and flashed it so I thought it was just the same. I'm pretty sure I am zve. Can I flash a zv8 rom if I have a zve rom? How do I get out from the bootloop?
zach_95 said:
I tried to flash Validus ROM so i'm guessing that's zv8? I am rooted btw. Wait so you can upgrade twrp by flashing another twrp file? When I used flashify, after flashing the 2.8.4 bumped twrp it rebooted to my current twrp 2.7.0 and flashed it so I thought it was just the same. I'm pretty sure I am zve. Can I flash a zv8 rom if I have a zve rom? How do I get out from the bootloop?
Click to expand...
Click to collapse
Basically you're stuck using the ZVE tot to bring it back to factory. Be sure to boot it at least once as the phone will have to re-activate itself.
Try the zv8 modem
http://forum.xda-developers.com/showthread.php?t=2451426
And if not, then try you and always check the op carefully before flashing.

Rooting and flashing ROM

Hi. I wanted to root out Tab S 10.5 (T800), may I know what are the steps. Been browsing onto various threads but to no avail. Im on Lollipop version btw. So first, I have to flash twrp via odin, right? Then after that? Do I have to flash MM bootloader or I just stick with pre installed bootloader before I can install a rom... Im looking at Lineage ROM. Will I get bootloop if I flash lineage on top of my lollipon bootloader? Thanks
denwathappened said:
Hi. I wanted to root out Tab S 10.5 (T800), may I know what are the steps. Been browsing onto various threads but to no avail. Im on Lollipop version btw. So first, I have to flash twrp via odin, right? Then after that? Do I have to flash MM bootloader or I just stick with pre installed bootloader before I can install a rom... Im looking at Lineage ROM. Will I get bootloop if I flash lineage on top of my lollipon bootloader? Thanks
Click to expand...
Click to collapse
Have you done it?
Cause I fail bootload with twrp..

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