Develop Bugs

Another way GSM Unlock for US Carriers and returning from d801 to ls980

So is there any other way of gsm unlocking the LS980 for US carriers (T-mobile for me) without being on the two specific roms that do this? Like say Vanir, or omnirom, or the Glex rom? I see the build.prop method mentioned a lot but not the actual process for it, and does that work for US carriers? Also, I flashed Justin's stock JB rom on my ls980 so its going to say its a d801, how do i go back to my ls980 status? I may or may not have accidentally my backup too... any way to undo this without using the lg flash tool?

justin posted a guide on how to port pretty much any rom from any of the other carriers:
http://forum.xda-developers.com/showthread.php?t=2596175&page=41
Look for post #410 (credit to justin)
So far Ive tried the energy rom in the tmobile dev section and the stock international version (d802). Both worked well and I especially liked the d802 because it had the fm radio app and it worked great. Some other users have ported verizon roms as well.
Ive also tried the build prop method with modest success:
http://forum.xda-developers.com/showthread.php?t=2596175&page=41
Look for post #423 and remember ti use lowercase "spr" (credit to MA7MOD_GSM)
Unfortunately the build prop method has a few quirks. You have to dial a "1" before dialing a number otherwise the dialing app crashes. Also I couldn't get wifi tethering to work properly. Eventually I settled on the energy rom and its been my daily driver for about 2 weeks and I cant complain much.
I dont know if you can successfully flash a ls980 and get back on the stock rom without lg flash tool. If you want to go back to stock Id stick to the tried and true method namely the stock tot file and lg flash tool. Follow the instructions here: (credit to hyelton)
http://forum.xda-developers.com/showthread.php?t=2432476

wsox1919 said:
justin posted a guide on how to port pretty much any rom from any of the other carriers:
http://forum.xda-developers.com/showthread.php?t=2596175&page=41
Look for post #410 (credit to justin)
So far Ive tried the energy rom in the tmobile dev section and the stock international version (d802). Both worked well and I especially liked the d802 because it had the fm radio app and it worked great. Some other users have ported verizon roms as well.
Ive also tried the build prop method with modest success:
http://forum.xda-developers.com/showthread.php?t=2596175&page=41
Look for post #423 and remember ti use lowercase "spr" (credit to MA7MOD_GSM)
Unfortunately the build prop method has a few quirks. You have to dial a "1" before dialing a number otherwise the dialing app crashes. Also I couldn't get wifi tethering to work properly. Eventually I settled on the energy rom and its been my daily driver for about 2 weeks and I cant complain much.
I dont know if you can successfully flash a ls980 and get back on the stock rom without lg flash tool. If you want to go back to stock Id stick to the tried and true method namely the stock tot file and lg flash tool. Follow the instructions here: (credit to hyelton)
http://forum.xda-developers.com/showthread.php?t=2432476
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Click to collapse
Any idea as to whether trying the romn compare method listed in Justins instructions would work with the base and another sprint rom. I believe the rom is called d3rp or something similar.

juanacevedo said:
Any idea as to whether trying the romn compare method listed in Justins instructions would work with the base and another sprint rom. I believe the rom is called d3rp or something similar.
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Click to collapse
Thats a good question. I cant speak from experience but Id imagine that any stock based spring rom would still have the usa gsm carrier lock. Now if I remember correctly some users have reported that using the build prop method then flashing a sprint AOSP rom unlocked the phone for usa carriers. Again I havent tired it myself but its somewhere in the unlock thread here:
http://forum.xda-developers.com/showthread.php?t=2596175

wsox1919 said:
Thats a good question. I cant speak from experience but Id imagine that any stock based spring rom would still have the usa gsm carrier lock. Now if I remember correctly some users have reported that using the build prop method then flashing a sprint AOSP rom unlocked the phone for usa carriers. Again I havent tired it myself but its somewhere in the unlock thread here:
http://forum.xda-developers.com/showthread.php?t=2596175
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Click to collapse
Ah, I tried the rom porting method with an ATT rom but it woyldn't boot. It got past the lg logo and got stuck on a black screen and at the top left it said Fastboot and under that it had a number code. I managed to restore from backup using twrp but any idea what that was or how to get past it?

Which ROM did u try? Also did u clear cache/dalvik before and after installation? Try any of ROMS in the international section. Ive ported a few international ones and never had a problem. also Im pretty sure that justins Tmo port has worked with att sims,

wsox1919 said:
Which ROM did u try? Also did u clear cache/dalvik before and after installation? Try any of ROMS in the international section. Ive ported a few international ones and never had a problem. also Im pretty sure that justins Tmo port has worked with att sims,
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It was called something along the lines of grievous or grievious rom and yes, I wiped everything and I always clear both caches but it wouldn't boot and got stuck on the fastboot screen. I replaced all the necessary files although I did notice that the rom did not have the loki folder at all but I copied it anyway, is that maybe why that happened? Also, do you remember what other roms you've tried besides the energy rom?

wsox1919 said:
justin posted a guide on how to port pretty much any rom from any of the other carriers:
http://forum.xda-developers.com/showthread.php?t=2596175&page=41
Look for post #410 (credit to justin)
So far Ive tried the energy rom in the tmobile dev section and the stock international version (d802). Both worked well and I especially liked the d802 because it had the fm radio app and it worked great. Some other users have ported verizon roms as well.
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Hi
Hi , I have flashed JUSTIN ROM posted in post# 239
It works fine , I have one issue and one query
- I can't set up any APN , by default it's T-Mobile. Even though I can add apn manually I can't select as there is no select button next to the apn.
Please note I am using this ROM in India/Airtel network (Need urgent help on this as no DATA is active)
- Is there any Kitkat version of this ROM
I have also attempted to use another ROM , following the instructions as per post #410
But after flashing my phone stuck in LG logo.
- Do I need to flash some other modem
- ROM which I were trying to flash is T-Mobile stock debloated (Kitkat) and I compared and did file adjustment against Justin's ROM (Sprint - T-Mobile , post#239 )
ROM link : http://forum.xda-developers.com/showthread.php?t=2688981

Best clean / stock ROMs? (Mid-2018 Edition)

I have an old T-Mo S4 on 4.something and would like to play with some custom ROMs. I see that there are several ROMs but am not sure which one to start on.
What's the cleanest, most compatible, stock-like ROM for the S4? Preferably Android 7.x or newer.
Additionally, is there a simple way of reverting back to an official T-Mobile ROM?

I went with lineage, used it for a couple of phones. It's currently in active development, root is optional so I think safetynet is not an issue. I think a couple of other ROMs are based on lineage, so I just stick with them.
As for reverting back I don't know. I had to download stock for an old phone and flash back, this time I tried backing up stock, but didn't back up stock recovery, didn't think of it and not sure if I can. I don't know if my backup of stock will work if I try to flash back. Still pretty new to all of this, or maybe not new so much as I'm not a developer and I'm trying to follow as best I can.

besweeet said:
I have an old T-Mo S4 on 4.something and would like to play with some custom ROMs. I see that there are several ROMs but am not sure which one to start on.
Click to expand...
Click to collapse
I flashed AlaskaLinuxUser's [ROM][7.1.1] SlimRoms N [jfltetmo] build on my bone-stock SGH-M919 a week ago. It's my daily driver, so I'm glad the 7.1.1 Slimroms ROM has proven to be lean and stable.
It carries the same SGH-M919 model number so IR blaster apps are available.
It is not rooted, so corporate sector apps don't have a cow over security.
It is easily rooted using the recover-flashable SuperSU zip, and easily unrooted inside the SuperSU app.
Portable Hotspot works well, although only in the 2.4GHz band.
Media players are absent (slim indeed), so I had to download AOSP Music+ etc.
Wi-Fi Calling does not work :crying: due to not having T-Mo's proprietary app.
TWRP can backup and restore the whole phone using an SD card. You'll need around 7GB free on the card.

snarkbait said:
Wi-Fi Calling does not work :crying: due to not having T-Mo's proprietary app.
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Click to collapse
Have you attempted to manually get Wi-Fi Calling working? There are plenty of stock devices - the Moto G6 for example - where Wi-Fi Calling works.

Want to flash custom rom, need VoLTE

I'm getting lost in a lot of the information in here.
I'm fed up with lousy performance and charging my phone 2-3 times per day. I've read a few posts online about how the Exynos version is to blame (lucky me, that's the one I have), and that there are some minor tweaks I can do to both improve the performance and battery life.
However, I am dependent on VoLTE and being able to mask root access (actually, I don't really need root access, I just want to change the CPU settings, which I assume requires root access).
From what I've read none of the AOSP ROMs supports VoLTE, and the Lineage crew says it's impossible for them to support it, while other ROMs says that "everything works" which I would think includes VoLTE.
So to the point. I need to keep VoLTE, and I need to be able to mask root. Is it possible to retain those while:
1) Being able to mod CPU settings
2) Being able to uninstall Samsung (cr)apps
3) Getting a clean android experience without any Samsung customization
Device: SM-G960F
Many thanks.

Im on Soliders ROM, very very good ROM.
I have WiFi calling working, but I have to contact my provider and ask for the config file to be OTA sent to me (only if I full wipe on setup)
I have VoLTE, but it doenst work or activate. Not sure its every worked.

basicreece said:
Im on Soliders ROM, very very good ROM.
I have WiFi calling working, but I have to contact my provider and ask for the config file to be OTA sent to me (only if I full wipe on setup)
I have VoLTE, but it doenst work or activate. Not sure its every worked.
Click to expand...
Click to collapse
Awesome, but now I have a new question. What does bri4 mean? I see BRI1, BRI3 and BRI4 for some ROMs, does that have something to do with which version of the device I have?

BRI4, its just the latest release basically.
Can check in settings>about>software to see your version and work from there

Please Confirm - Does stock AT&T S9 allow Tethering?

I am trying to decide between these two versions.
I dont really see the downside to the AT&T version as I dont plan on switching carriers, and from what I understand, the unlocked version wont support certain AT&T calling features.
Aside from some additional bloat - I recall it used to be that the AT&T versions didnt allow tethering. I think they currently DO allow tethering, correct?
Any other downsides to choosing the AT&T variant?
Thanks

For tether u must subscribe to tethering package or mod to unlocked firmware change apn and enjoy

Thanks! So thats a big reason to go with an unlocked phone vs AT&T version...

lirong said:
Thanks! So thats a big reason to go with an unlocked phone vs AT&T version...
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Click to collapse
I have att branded and Odin the u1 firmware and was good to go.

Which Roms can be installed with QI15 firmware

I have purchased yet another note 4 for the grandson. His firmware is QI15. Original plan was for me to use it, but since my Pixel 3a XL is still yet a lease I might as well use it. Plus it is a lot faster anyway.. His mother does not have the money to buy one for him, so I figured what the hell, he can have it.Which roms can he use.. I no longer have mine, but will root this if it is still possible.. From reading you can't downgrade from MM to LL. But can you downgrade to a earlier version of MM? Thanks.

inYes, that is correct but also cant downgrade the bootloader/modem. That is because of fused 5, binary 4. and te old official stock 5DQ15 .tar md5 can be fashed via Odin. Any other stock firmware below that has a fused 4 and flashing will result in a bricked device.
If your already on 5DQ15 and wish to flash customer roms then use TWRP and make a back up of all partitions to external sd. The any custom rom for Sprint Note 4 (sm-n910p) on Marshmallow are/should compatible. Basically, follow the instructions provided by the rom developer but do not flash a different bootloader or modem. Other than that follow all other institution. For best results, start in setting , sustem update and turm of automatic updates then update PRL and Profile beforehand. Developer Option and usb debugging enabled.
Rooting the Sprint Note 4 on 5DQ15 still possible? Yes 100% SuperSu or Magisk are the preferred root methods.
---------- Post added at 08:42 AM ---------- Previous post was at 08:16 AM ----------
[/COLOR]https://forum.xda-developers.com/no...are-customizations-mods-roms-kernels-t3960353
Also recommend you start with a stock deodexed rom as a base before flashing other custom roms. Rom only
https://forum.xda-developers.com/no...tock-deodexed-debloated-pk1-12-11-16-t3517454
or
https://forum.xda-developers.com/note-4-sprint/development/rom-t3568075
then reboot and give it time to properly set up set up. Check if hotspot is visible setting and check your apn settings. If all looks good and it should the return to TWRP and once again make a back up and rename (2019-10-05-deodexStockNoroot.....) so not to be mistaken with any other backups. After that flash root .zip and/or a custum rom of you choice.
I use the BeastMod r61 kernel by Freeza on a N4 Dtux V9 Legend rom. Fixed issues with network connection.
https://forum.xda-developers.com/note-4-sprint/development/rom-updated-1-14-2017-t3538051

Mr. JAVI said:
inYes, that is correct but also cant downgrade the bootloader/modem. That is because of fused 5, binary 4. and te old official stock 5DQ15 .tar md5 can be fashed via Odin. Any other stock firmware below that has a fused 4 and flashing will result in a bricked device.
If your already on 5DQ15 and wish to flash customer roms then use TWRP and make a back up of all partitions to external sd. The any custom rom for Sprint Note 4 (sm-n910p) on Marshmallow are/should compatible. Basically, follow the instructions provided by the rom developer but do not flash a different bootloader or modem. Other than that follow all other institution. For best results, start in setting , sustem update and turm of automatic updates then update PRL and Profile beforehand. Developer Option and usb debugging enabled.
Rooting the Sprint Note 4 on 5DQ15 still possible? Yes 100% SuperSu or Magisk are the preferred root methods.
---------- Post added at 08:42 AM ---------- Previous post was at 08:16 AM ----------
[/COLOR]https://forum.xda-developers.com/no...are-customizations-mods-roms-kernels-t3960353
Also recommend you start with a stock deodexed rom as a base before flashing other custom roms. Rom only
https://forum.xda-developers.com/no...tock-deodexed-debloated-pk1-12-11-16-t3517454
or
https://forum.xda-developers.com/note-4-sprint/development/rom-t3568075
then reboot and give it time to properly set up set up. Check if hotspot is visible setting and check your apn settings. If all looks good and it should the return to TWRP and once again make a back up and rename (2019-10-05-deodexStockNoroot.....) so not to be mistaken with any other backups. After that flash root .zip and/or a custum rom of you choice.
I use the BeastMod r61 kernel by Freeza on a N4 Dtux V9 Legend rom. Fixed issues with network connection.
https://forum.xda-developers.com/note-4-sprint/development/rom-updated-1-14-2017-t3538051
Click to expand...
Click to collapse
you know what sucks, my last note 4 for Sprint hell I was able to downgrade from marshmallow to lollipop. But since this is for the grandson I guess it really doesn't matter I'll put something on there good for him and leave it at that

doubledragon5 said:
you know what sucks, my last note 4 for Sprint hell I was able to downgrade from marshmallow to lollipop. But since this is for the grandson I guess it really doesn't matter I'll put something on there good for him and leave it at that
Click to expand...
Click to collapse
I 100% agree that not being able to downgrade sucks big time. I hear all the hipe about new Android OS updates but there are advantages of older versions. In 2018, I searched for a replacement with a lower bootloader but simply couldn't find one. Knowing that peope were bricking there device and Odin fails I decided to get one in fair condition. Being the type to mod and flash yet unsure of what ir how to do that as custom roms are specific to bootloader and modem. I figured, I'll practice with a cheap on incase I hard brick. At the time there didnt seem to be specific information on what rom worked with 5DQ15. I started out with Stockist Plus tidbits Q15. My old Note 4 was on [MOAR v2.1] [ULTIMATE Note5 Hybrid] on lollipop 5.1.1. and had lost of customizations prebuild. So going from the Mother Of All Roms (MOAR) on lollipop to Stockish Q15 on marshmallow, just sucked. It didnt take long before I started taking calculated risks with flashing and porting, even from other models and variations. Stepping out side the box but within boundaries. For instance, the n910f is an international version but much of its software is compatible with the n910p. For instance, this one works on n910p with most stockish roms on Sprint Note 4. With Custum roms it may conflict depending on the setting. If stockish rom or custom rom come with a "rom control"app (interface) and .zip in the link bellow come with "rom control" app thin it is not compatible. One cool feature is it adds "multiple user" in setting.
https://forum.xda-developers.com/note-4/themes-apps/utility-rom-control-note-4-stock-roms-t3586944
These n910f worked for me and has the advantage of separate .zips moding specific parts but warn that one of these .zip in the link , I believe its the "settings theme" .zip when flashed removes "hotspot" from the settings. Just 6.0mm zips are compatible on dq15 n010p.
https://forum.xda-developers.com/note-4/themes-apps/theme-customize-galaxy-note-4-n910f-t3017621
The GRX is one of my favorites for stockish roms. It can be compatible with custom roms but its a complicated process. Im guessing it should work with the N7 hybrid rom. Its relatively easy and offers nice smooth customizations. Its a good idea to chech the setting of both settem and "setting GRX" as to avoid conflict. If you find it on XDA even better. For me, I find it to be the best thing on 6.0mm.
https://www.google.com/amp/s/androidfit.com/grx-touchwiz-mod-v8-apk-for-any-samsung/amp
And the PK1 hotspot mod will work as long as the hotspot is in the main settings.
https://forum.xda-developers.com/no...tock-deodexed-debloated-pk1-12-11-16-t3517454
Good luck to you and your grandson rooting and moding.

Mr. JAVI said:
I 100% agree that not being able to downgrade sucks big time. I hear all the hipe about new Android OS updates but there are advantages of older versions. In 2018, I searched for a replacement with a lower bootloader but simply couldn't find one. Knowing that peope were bricking there device and Odin fails I decided to get one in fair condition. Being the type to mod and flash yet unsure of what ir how to do that as custom roms are specific to bootloader and modem. I figured, I'll practice with a cheap on incase I hard brick. At the time there didnt seem to be specific information on what rom worked with 5DQ15. I started out with Stockist Plus tidbits Q15. My old Note 4 was on [MOAR v2.1] [ULTIMATE Note5 Hybrid] on lollipop 5.1.1. and had lost of customizations prebuild. So going from the Mother Of All Roms (MOAR) on lollipop to Stockish Q15 on marshmallow, just sucked. It didnt take long before I started taking calculated risks with flashing and porting, even from other models and variations. Stepping out side the box but within boundaries. For instance, the n910f is an international version but much of its software is compatible with the n910p. For instance, this one works on n910p with most stockish roms on Sprint Note 4. With Custum roms it may conflict depending on the setting. If stockish rom or custom rom come with a "rom control"app (interface) and .zip in the link bellow come with "rom control" app thin it is not compatible. One cool feature is it adds "multiple user" in setting.
https://forum.xda-developers.com/note-4/themes-apps/utility-rom-control-note-4-stock-roms-t3586944
These n910f worked for me and has the advantage of separate .zips moding specific parts but warn that one of these .zip in the link , I believe its the "settings theme" .zip when flashed removes "hotspot" from the settings. Just 6.0mm zips are compatible on dq15 n010p.
https://forum.xda-developers.com/note-4/themes-apps/theme-customize-galaxy-note-4-n910f-t3017621
The GRX is one of my favorites for stockish roms. It can be compatible with custom roms but its a complicated process. Im guessing it should work with the N7 hybrid rom. Its relatively easy and offers nice smooth customizations. Its a good idea to chech the setting of both settem and "setting GRX" as to avoid conflict. If you find it on XDA even better. For me, I find it to be the best thing on 6.0mm.
https://www.google.com/amp/s/androidfit.com/grx-touchwiz-mod-v8-apk-for-any-samsung/amp
And the PK1 hotspot mod will work as long as the hotspot is in the main settings.
https://forum.xda-developers.com/no...tock-deodexed-debloated-pk1-12-11-16-t3517454
Good luck to you and your grandson rooting and moding.
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your in-depth detail of what works good for this phone with this particular bootloader is much appreciated thanks.

doubledragon5 said:
your in-depth detail of what works good for this phone with this particular bootloader is much appreciated thanks.
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Click to collapse
Thank you and your welcome, happy to help

doubledragon5 said:
your in-depth detail of what works good for this phone with this particular bootloader is much appreciated thanks.
Click to expand...
Click to collapse
If you install Busybox with the N7 hybrid kernel I offer a suggestion.

Busybox by Stephen (Stericson)

I never installed the Dr. Ketan rom but I did look at the Touchwiz launcher provided in the .zip and it is a MM. Dont know why you got FC's . Most likely its our latest firmware that to blame.

Wish I could remember what it was I flashed to get that in my settings as I think I remember you wanted that feature.