yashsingh1/xdaforums huggingface dataset:
[LG V20 Questions & Answers] tickertapes:
H990DS new regional rom success and now have VoLTE :)

I installed LGup and flashed it with the phillipines rom. My phone still says V10e-TWN-XX in the SW info but I have VoLTE support now, weird or what.

Anyone else wishing to give this a go will need to install Lg Bridge from the LG website which comes with the required USB drivers, then install LGup (LGUP_Store_Frame_Ver_1_14_3.msi) found here https://www.mylgphones.com/download-lg-up-software. You will also need a DLL (LGUP_Common.dll) for the H990DS https://drive.google.com/open?id=0B0-_MIhGeuKhNWFpcUNfc2FKeG8, copy this to C:\Program Files (x86)\LG Electronics\LGUP\model\common\ after installing LGup. if the folder does not exist, create it. replace the existing file with the one in the link. the one that comes with LGup will not work.

The regional versions of the firmware for the H990DS can be found here https://lg-firmwares.com/lg-h990ds-firmwares/

I chose to upgrade in LGup, it retained all of my settings and I lost no data.

I'll test it out tomorrow and see what the VoLTE calls are like.
[LG V20 Questions & Answers] buongu:
thanks for sharing :) btw SEA rom has VoLTE support as well, in case you needed it in future. I installed it earlier today and everything seems to work fine.
[LG V20 Questions & Answers] tickertapes:
What SW version was your H990DS shipped with? if you have changed it, does it show up in sw info?
[LG V20 Questions & Answers] Bhonka:
I was on the TWN rom originally.

I flashed the SEA rom and now have the VoLTE icon but I cannot turn it on. I have spoken to my mobile carrier and they have told me VoLTE is enabled on my service so the phone seems to be the problem.

I just rebooted my phone and the VoLTE icon is gone haha...
[LG V20 Questions & Answers] empatbelas02:
same too me.. orignally i can activated volte on my phone but after few sofwafe update, volte has gone..

i need to reset myphone and icon volte appear but can activated.. sad TT
[LG V20 Questions & Answers] Quetsch:
VolTE and Wifi Calling Provider settings

Hi!

I just got a H990ds and OTA updated it's software to Patch level 1st May 2017 (V10e-TWN-XX). It claims to add VoLTE support. I can confirm, functionality exists in ROM and I also activated the Wi-FI Calling options in service menu (*#546368#*990#). However neither VoLTE, nor Wi-Fi Calling does work, VoLTE symbol can't be activated, Wi-Fi calling enabled and forced doesn't change a thing.

As far as I know, your network provider needs to support and enable these services on your SIM card. And only phones with the right provider configuration (CSC files in Samsung phones) are allowed and able to use these services.

Now to me. I'm using the german O2 network, O2 claims to have VoLTE working with LG G6 (ROM without Branding) and LG G4 (with provider Branding):

(https://hilfe.o2online.de/docs/DOC-...niere-ich-im-lte-netz#jive_content_id_Samsung).

Wouldn't it be possible to somehow extract the necessary configurations for VoLTE from a recent LG G6 ROM which should be quite similar to V20 ROMS (both on Android 7.0) and add theses settings to the V20?

Unfortunately I don't have any clue where these settings are stored.

Does anyone have a better understanding of that matter and maybe already working on a solution?

After some searching, I found this interesting thread. Maybe gonna try it out, after rooting H990ds gets a bit less risky.

https://xdaforums.com/lg-g5/how-to/rooted-stock-based-rom-volte-fix-t3564924

https://xdaforums.com/lg-g6/help/south-korea-t3570972/page2

Ok, rooting requires flashing an old firmware which has no VoLTE support included. So, this is kinda pointless atm. What a pity.
[LG V20 Questions & Answers] NK07:
any solution

same here,did you able to crack it please let me know if yes
[LG V20 Questions & Answers] mehtamitul:
No thats the way chipset of all phones function.
[LG V20 Questions & Answers] emdroidle:
Yeah the number of changeable things in the service menu is kind of surprising.

The root process requires an older firmware. Keeping root though doesn't require an old firmware. Once rooted KDZ Writer can update to any version for which a KDZ file is available.
[LG V20 Questions & Answers] emdroidle:
"Holy bloatware Batman!" Oy vey does the Singapore image have a lot of bloat. The Australian appears to have less. The bloat of Singapore was so bad I pulled it almost instantly. :(

I think most/all of this is controlled by 3 areas: /system, /firmware, and /cust

/system is obviously the system area. If things are missing there VoLTE/VoWifi won't work. /firmware is the modem firmware, without the modem/phone portion won't work at all.

/cust appears rather more interesting. There seems to be rather a lot of files in there related to VoLTE. I'm left wondering if those can be adapted to get VoLTE functioning in areas not supported by H990DS images...

The other question is which areas to pull from which KDZ? Does VoLTE not work on Taiwan KDZ simply because the appropriate information is missing from /cust? Does it need alternative modem firmware?

The released `kdzwriter` lacks support for replacing /cust from a KDZ file, but the code has been implemented.
[LG V20 Questions & Answers] tickertapes:
Error Message after flashing different regional rom

I've tried migrating from TWN to SEA and AUS and get this error message after booting the device, any ideas?

This is easily dismissed and phone works but I have no VoLTE which is what i want.
[LG V20 Questions & Answers] tickertapes:
Error Message after flashing different regional rom

You're so right about the bloatware with the SEA rom, it just kept on coming and coming.

Another strange thing in addition to the error message in my previous post, when I looked at the SW info it said that I had a Global version of the rom. I was expecting to see SEA Singapore there.

Any ideas?

I'm seriously thinking about dumping LG and never to return. I have no signal where I am because the only signal available is 800Mhz LTE and my provider (Three) will not let me on unless my device supports VoLTE.

I've been sticking with LG because I do like features like the removable battery, the FM radio and the IR blaster but not being able to make calls where I am is a killer.
[LG V20 Questions & Answers] tickertapes:
Found a thread here where someone has managed to flash a HongKong rom onto a TWN H990DS with similar results to me but no mention of my error message?

https://translate.google.co.uk/tran...et/service/board/lecture/10195605&prev=search
[LG V20 Questions & Answers] emdroidle:
Yeah, something is definitely going on there. I'm pretty sure there is some extra step which is done by LGUP during upgrade/refurbish via KDZ. The net result is `kdzwriter` works for upgrades of the same KDZ region, but has issues when upgrading to another region's KDZ file.

Sorry to say it, but what will work is to

Fully backup

Full unroot (`dd if=/dev/block/bootdevice/by-name/abootbak of=/dev/block/bootdevice/by-name/aboot`)

LGUP to Singapore or Australia KDZ

Re-root via DirtySanta

I would like to make `kdzwriter` fully able to change regions, but right now I've got no idea what is needed for this. I think this involves writing a magic value into flash somewhere, but I've got no idea where right now. :( Given your urgent level of need, you may need to resort to the above.

Does anyone know the level of VoLTE/VoWiFi functionality of various regions? TW/Taiwan it is almost completely absent; SG/Singapore sounds likely to have it; HK/Hong Kong also seems likely to have it. What about Australia? Australia seems potentially like a good choice if the support is there (pretty sure the H990DS in Australia isn't carrier tied and therefore free of bloatware).
[LG V20 Questions & Answers] Zenroid:
H990N which has been selling in Hong Kong for a long time has VoLTE since day 1 but we are still stuck at Feb 2017 security patch level, and I don't think we have VoWiFi from any carrier yet
[LG V20 Questions & Answers] tickertapes:
Okay, so what would happen if I flashed H990N firmware into a H990DS? Would I end up with a brick?
[LG V20 Questions & Answers] Zenroid:
Never try that on v20 though I did flash sea firmware to HKG one for G3 before but it was quite a long time
[LG V20 Questions & Answers] Moon75:
I got H990ds Taiwan version:

- New phone H990ds it will come with the firmware 10b I think, 2 OTAs updates will update it to firmware 10f (Taiwan)

- For Volte it got icon at the top quick setting area but not able to enable it

- I been flashing (use LGUP) firmware SEA (Singapore) on top of my Taiwan firmware 10f, you can flash SEA (Singapore) 10e or 10f firmware with the upgrade option in LGUP it works but you will get some SG bloatwares.

- Latest SEA (Singapore) 10G is flashable too but not ok it will work normal but show two errors everytime the phone start up.

- Note flash firmware you won't lose data or apps everything stay the same as before you flash it.

I haven't try other firmware, HK maybe next but they pretty much the same like Taiwan and SG firmware.
[LG V20 Questions & Answers] emdroidle:
How much bloatware is there on the H990N?

If using the unmodified LGUP which does all the checks, very unlikely. All the H990* devices can share the same kernel so userspace cannot be very different.

If using kdzwriter you would be able to revert simply by booting back to TWRP and writing a different KDZ.

During the process of modifying DirtySanta for the H990DS, at one point I booted a kernel which lacked "lge.sim_num=2". In this setup all the dual-SIM functionality disappeared from the menus, but otherwise the system worked (also had a broken modem so I've got no idea whether a dual-SIM device will function with the second SIM completely disabled). Even though some software bits can damage hardware by doing the wrong thing, most OS software is pretty darn resilient.
[LG V20 Questions & Answers] Zenroid:
There is no bloatware in H990N and it is a dual SIM version for HK and China, no idea what will happen for flashing it to a h990ds, if that works I may want to try flashing h990ds firmware for much newer security patch
[LG V20 Questions & Answers] emdroidle:
In truth I haven't checked that closely. Kernels built for a H990DS work fine on a H990N (even when the kernel is telling userspace the device is a H990DS!). Most LG devices are pretty compatible so a H990DS KDZ is very likely to work on a H990N. If normal LGUP without hacks to enable extra features is willing to install a H990DS KDZ onto a H990N, then that is a pretty good indicator it will work (LGUP should prevent you installing an incompatible KDZ).

I don't know about other H990* KDZ files on H990DS/H990N. Ones for a single-SIM device may lack support for dual-SIM functionality, but there is a pretty good chance the functionality is present just inactive...

I'd like to see an updated Australian KDZ.
[LG V20 Questions & Answers] oleg77:
Hi. I bought recently a H990DS still on its v10c-TWN stock rom. I have an ota notification for v10e-TWN-may-17 that mentions voLTE capacity. Not upgraded as I follow your progress with dirty santa and camera and fast charging issues...

Clean stock ROM by the way, almost no bloatware.
[LG V20 Questions & Answers] Zenroid:
Just would like to report back H990N just released a firmware with support for VoWiFi with SEP security patch
[LG V20 Questions & Answers] p7810456:
I think I found something of interest for those who may be willing to look into it for those of us who do not want to flash. In the *#546368#*990(or other model #)# menu, there is an option under Field Test -> UX for GPRI VoLTE/VoWiFi. Inside this there are a bunch of checkboxes that don't seem to do anything. I have the V10f-AME-XX software version. I don't know what these do but I'm sure someone would know or could look into this. The pic is the attachment since I'm on mobile and can't host pictures on Imgur.
[LG V20 Questions & Answers] Nolia:
I have checked and nothing happens. I am using an EE sim in slot 1 and iD Mobile (3 network MVNO) in the other, can't enable the VoLTE on the phone. Also EE do mention that Wi-Fi calling works on phones bought directly from them. I know these services are different lol
[LG V20 Questions & Answers] tickertapes:
To access the UK's VoLTE network, we will have to root and copy carrier configuration files from another UK LG device. An LG G6 bought in the UK may be viable.

It's a shame, this is such a lovely device from a hardware perspective, we just need some help with the software.
[LG V20 Questions & Answers] p7810456:
Judging from another thread, root is very complicated on this device. It's there a way you can edit system files without a custom recovery using adb?
[LG V20 Questions & Answers] Nolia:
You are absolutely right on the hardware side. On the rooting side of things, I am not really a hardcore tinkering man. However, I am willing to try it out. I bought this phone mainly for music purposes and obviously communication;)
[LG V20 Questions & Answers] p7810456:
Can someone post the VoLTE files for either the US996 or an H990DS with VoLTE since I'm in the US in case I decide to root? Thanks to anyone who does!
[LG V20 Questions & Answers] tickertapes:
Support for VoLTE was successfully added to the G4

I'm sure its possible with the V20

https://xdaforums.com/showpost.php?p=63478278&postcount=14
[LG V20 Questions & Answers] Nolia:
what will be the best official rom for the H990DS in general?? VoLTE is a nice feature so is wifi calling but man I wish it was that simple to get it. I am a novice lol
[LG V20 Questions & Answers] toniteixiera2007:
Hello greetings from Portugal!

My device:

LG H990DS;

Model Region: ARE (Mid. East/AfricaAE/United Arab Emirates)

Software: V10g-AME-XX

After a few hours searching and flashing singapore and phillipines roms volte icon didn´t appear... Using LGUP to flash these rom´s only possible with upgrade option and not reburbish... After the flashing 3 or 4 error windows appear, saying that MCC and MNC (NT CUST) don´t match with my version (open_ame). However the phone works with no issues. With these rom´s using quickshortermaker i can find volte feature in hidden menu, but can not activate...

But the most surprising thing is that in this post i saw screenshots with the 2 sim´s mobile data activated simultaneously... even with original rom i can activate just 1 mobile data at a time...

Called vodafone portugal carrier and they said to me that volte is enable on my sim card... so the issue is my phone!

Maybe there´s a way by rooting phone, but too risky and with no guarantees that volte will work...
[LG V20 Questions & Answers] lallolu:
The LGUP_Common.dll here is the only one that worked for my H990DS. I am trying to change to the Singapore ROM since it is the most updated one.
[LG V20 Questions & Answers] p7810456:
So, living in the US and wanting VoLTE, can I copy the cust from a US996 that supports VoLTE with T-Mobile or would I end up with a brick? If someone could be kind enough to post the cust partition of their US996 I could try and see if I could copy the VoLTE config files to my H990ds to see if TMO VoLTE would work.
[LG V20 Questions & Answers] sailfish009:
i am using H990DS phone with H990N firmware (201612 version).

Rooted, VoLTE, VoWiFi works fine here.
[LG V20 Questions & Answers] DroneJC:
Taiwanese variant running on V10i as latest software. Check https://lg-firmwares.com/lg-h990ds-firmwares/ try updating using LGUP.
[LG V20 Questions & Answers] Cyber_in:
You can't see the option in settings

But u can enable it with out patching or rooting

But changing the band with of the cell
[LG V20 Questions & Answers] p7810456:
A bit late, but if you use a terminal and mound /cust as rw, you can edit the files directly for ESA, AME, etc.
[LG V20 Questions & Answers] netspider1:
I figure out how to fix this error on non-rooted phone: Current version is not available for user. Can't find matched cust for NTCODE=[,]

This is good explanation, thanks to GuestK00280, but solution require rooted phone

https://xdaforums.com/lg-g3/general/how-to-change-region-t2904951

I dont root the phone, I am flashing stock firmwares only, and don't have any root and bootloader is still locked.

So basically what is happening the phone is verifying the country code folder, but because I flashed firmware for different region, my country code doesn match to the country code into firmware.

For example, I flashed with patched LG UP 1.14.3 my phone with Taiwan original stock rom, I put Singapore firmware (H990ds10i_00_OPEN_SG_DS_OP_1117.kdz)

I fixed the error like this:

1. With LG Firmware Extract 1.2.6.1 convert .KDZ into .DZ

2. extract .DZ into .bin files

3. open cust_xxxx.bin with notepad, and search for „/cust/“ You will find the country code like this:

FFFFFF,56=/cust/OPEN_COM_DS

4. So 56 is the country code of the Singapore stock rom. OPEN for operator - which means any operator. COM for country - which means any country

5. on the phone go into service menu, for LG 990DS is *#546368#*990# -> SVC Menu -> Version Info -> NT Code

6. The line may look like this

"0","FFF,FFF,FFFFFFFF,FFFFFFFF,FF"

or

"0",

7. edit the line to look exactly like this

"1","FFF,FFF,FFFFFFFF,FFFFFFFF,56"

8. restart.

9. after restart the error is gone

10. factory reset and restart.

11. after restart all previous Taiwan bloatware is gone, and get replaced with Singapore bloatware. So now I flashed completely the Singapore stock rom.

Flashing Taiwan stock rom with Singapore stock rom made VoLTE button to appear in the draging top menu above notifications

I use this method on every stock rom from any different region, and my phone is never been rooted yet

Btw, I found in cust_xxxx.bin country code pointing to something interesting:

999999,99=/cust/SUPERSET

I wonder what will happen if I put instead 56 a country code 99? What stock rom will see after factory reset?
[LG V20 Questions & Answers] Valerio_Fatboy:
Hi,

it doesn't work for me....it keeps showing the same error on powering on the phone. When I try to change the NT code, it says NT code write error.
[LG V20 Questions & Answers] betelgeuse1031:
Hi guys, I am sorry for reviving the old thread.

I too owned H990DS Sea version on latest nougat. It has volte option but just couldn't switch on. I read through this thread, the main purpose is to force show the Volte option. But without proper carrier volte configuration file (.mbn file), the volte just won't work. I also read that Asus, Xiaomi and Oneplus users able to flash and/or change the mbn file to suit their carrier and volte works.

Please take a look at this thread on LG G8

https://xdaforums.com/t/guide-no-ro...ther-qualcomm-powered-lg-devices-too.4343655/

I tried on my H990DS using the above thread's method and it didn't work. I was informed that the mbn files are for LG G8. We need mbn files that are specific for LG V20. I have searched up and down and I couldn't find any.

So I hope that I have provided some insights and I hope any member/master/guru out there can help where to find the mbn file (collection of all international carriers mbn) and make volte works for H990DS.
[Xperia Z5 Compact Q&A, Help & Troubleshooting] l_abaurre:
I own a registered (with Xperia Care [warranty]) Z5C E5823 phone. This phone was purchased from eBay US, but I believe the phone came from China as I had to manually switch from Chinese to English during the first initialization. Although at the time I got this phone (mid 2016), several build and android version updates existed, mine never updated. It is still stuck with Android 5.1.1, build 32.0.A.4.11, kernel 3.10.49-perf-g6b847e2. The phone, PC companion and everything else claims it's the latest update/version for the E5823.

I wanted to know what is happening and how to solve this. The phone is completely stock. Never rooted.

Thank you.
[Xperia Z5 Compact Q&A, Help & Troubleshooting] Superrman:
Thats why i payed extra 300$ to Sony

(my previous SONY was from alternative store, although the phone still was real and not fake replica it didnt get OTA updates so i had to used flashtool to update)

anyway you dont lose much.. wait for android 7 and update from flashtool

you can try use sony site to see if you supposed to get update

http://support.sonymobile.com/global-en/xperiaz5/software/
[Xperia Z5 Compact Q&A, Help & Troubleshooting] l_abaurre:
I've noticed something strange... I went to the link provided and inserted my IMEI number. The website claimed I have the latest version of everything, "as usual". But it showed the following message: "Your Xperia™ Z5 is up to date! 32.0.A.7.3.

That's not my build number and it also claims my phone as a Z5 and not Z5C. I don't know if this is relevant or not, but definitely strange.

Anyways, I believe that to use this flashtool I would have to root the phone. In this case I'm a bit concerned as the first android I ever tried to root was bricked instead. So I try to stand clear of doing that as I've been traumatized by my experience hahahahahaha. Well, unless there is a step-by-step-foolproof-recipe solution, I don't want to risk bricking my phone or voiding warranty (still in effect) if an update to marshmallow is not all that great.
[Xperia Z5 Compact Q&A, Help & Troubleshooting] Procrustinator:
As long as you are flashing an official ROM with flashtool, you don't need to root your phone.

I was sick of waiting for my Z5 compact to get the OTA for whatever firmware I initially had, so I just flashed unbranded Nordic with no problem without being rooted.

There are a few threads here on XDA that will explain what you need to do to use flashtool.
[Xperia Z5 Compact Q&A, Help & Troubleshooting] mhaha:
The wrong IMEI and Chinese first boot screen suggests your phone came from shady sources, otherwise there's no reason for the discrepancy. Did you check and see if the IMEI number matches the one on the box?

If I were you, I'd seek out the ebay seller and ask for an explanation and refund or replacement, fraudulent IMEI's are no joke, I mean what if the IMEI is reported stolen? You'd probably get tracked down and paid a visit by unpleasant people or something. Sure, you'd likely be able prove your innocence, but not worth the risk or hassle IMO. Then again, you have been using it for half a year already, chances are nobody's going to bother you, ever.

It's possible that the mismatch is the reason why you never got an OTA update notice. Like other members have suggested, you can use flashtool to flash the latest firmware, but it's certainly not as easy and painless as an OTA update. Going down the road, I don't think you'll ever get to update OTA with your device, so if you want to hang on to it and keep it up to date, learn how to download official firmware using xperifirm, convert to FTF and flash using Flashtool .

Next time, buy from credible and reputable vendors. ;)
[Xperia Z5 Compact Q&A, Help & Troubleshooting] l_abaurre:
Thanks for the reply guys. Unfortunately, there was no suspicion at the time about the phone being "fake" or something like that. But after this IMEI situation and this problem as well (worth checking), I'm kinda suspicious. I don't have the box with me, I'll only be able to compare this in february, as I'm abroad. But I've registered my phone with Sony and I didn't have any problems. I even have the limited warranty available.

By the way, can this warranty be used to replace the phone in a case like this? Even considering the LED issue mentioned in the link above?

I guess I'll have to educate myself about flashing firmware with flashtool. I don't mind the extra hassle, as long as I don't brick the phone.
[Xperia Z5 Compact Q&A, Help & Troubleshooting] --jenana--:
You can't go to Sony and ask them to replace it. Ok, you can always try, but based on normal warranty, they won't replace it.

In your case, it's up to the dealer/store to fix your problem with IMEI, maybe a faulty ROM and so on. Or you can flash the update yourself :)