yashsingh1/xdaforums huggingface dataset:
[LG G8 Guides, News, & Discussion] GadgetGeekUSA:
Performed everything to spec. Launched QFIL and it sees the phone when I select "port" so I know I am in EDL mode and Windows device manager shows com port for phone as active. Everything seems to be connected properly but when I select "partition manager" under "tools" in QFIL it throws me a Sahara server error and/or firehose error. I'm using the firehose file and the QPST files you supplied with latest version of QFIL. My phone is AT&T sim locked model G850UM. Can't figure out why I get the error when I launch "partition manager" from within QFIL. Could Windows Defender be causing the problem?Any suggestions?

Update: The Sahara server error was happening because EDL mode was timing out. I launched QFIL and set everything up before booting into EDL mode then I launched partition manager as soon as I booted into EDL mode and it worked so I was able to backup files. So do I need to backup ALL the files just to be safe in case I need to restore the phone back to stock or is that not necessary?
[LG G8 Guides, News, & Discussion] GadgetGeekUSA:
Perhaps you can use QFIL to restore original modem_a and modem_b files and get 4g back?
[LG G8 Guides, News, & Discussion] ×RaúlMX×:
This guide works for V50 Verizon brother?
[LG G8 Guides, News, & Discussion] netmsm:
For me it was successful on V50 Korean version.
[LG G8 Guides, News, & Discussion] GadgetGeekUSA:
From my understanding it should work for that model. I've seen others on here claim success with that model. Unfortunately my phone is US AT&T variant which has the IMPL lock and I am not able to crossflash because of it. MAKE SURE you follow instructions EXACTLY step by step and have QFIL up and running BEFORE you boot into EDL MODE or else it will time out on you and throw you a Sahara server error.

Good luck 👍
[LG G8 Guides, News, & Discussion] Asyad:
Hello, I have a problem here. After I installed with wrong metode the custom rom and (changed the abl and boot partition), finally my lg g8x lm-g850um (20p) sprint (unlocked bl) I got a boot loop. But after that, I backed up the abl and boot partitions. At first I was entered into recovery mode. But after I restored from the modified abl to the original abl, I couldn't enter recovery mode anymore and it only bootlooping and couldn't access download mode and it was stuck in fastboot mode but I still could turned off the device via fastboot. Then after I restore the boot partition to the original boot. Then I got something even worse. I couldn't turn off the device in fastboot. Finally after I overwrite with some partitions that I got from person who uploaded. Finally I can enter download mode but still in a bootloop. I intend to crossflash it to A12 Canada ...40c, but my download display have red information at the bottom of the column. I don't know what this text means. But I'm still hesitant to do crossflashing to A12 ca_open 40c. Do you have the best solution so that my g8x returns to normal and can crossflash to android 12?
[LG G8 Guides, News, & Discussion] GadgetGeekUSA:
Since your bootloader is unlocked I would try using ADB mode to push TWRP custom recovery and then once you can boot into that then flash Lineage OS or some other custom rom. Remember to erase dalvik, cache, etc before you flash custom ROM. At this point it's probably your easiest solution. To go back to stock you would have to re-flash files you deleted by extracting them from stock KDZ image with KDZ Tools and using QFIL to re-flash them. Then re-lock the bootloader and try doing a system reset. If system reset doesn't work try using LGUP to re-flash stock KDZ image but make sure you at least have original FTM file put back in place. Hope this helps.
[LG G8 Guides, News, & Discussion] men_stive:
Hello everyone Please help me, I need a working dump of the LG g8x AT&T firmware
[LG G8 Guides, News, & Discussion] GadgetGeekUSA:
Good luck finding one. I've searched for hours and hours. No KDZ images for AT&T variant to be found anywhere for this phone.
[LG G8 Guides, News, & Discussion] RabbitTrax:
Steps

A)

1. Open QFIL.

What is QFIL? It is not on the download list above the steps.
[LG G8 Guides, News, & Discussion] GadgetGeekUSA:
I believe it is part of QPST software that IS included in the list. Once you have installed QPST open your start menu and browse down to QPST and QFIL should be one of the options under QPST.
[LG G8 Guides, News, & Discussion] RabbitTrax:
There nothing in the QPST archive that has QFIL anything in it.
[LG G8 Guides, News, & Discussion] RabbitTrax:
found it, it is here

Directory of C:\Program Files (x86)\Qualcomm\QPST\bin\QFIL.exe

after QPST*.exe is installed.
[LG G8 Guides, News, & Discussion] RabbitTrax:
Still not clear what this procedure does.... not having luck updating my LG 8X LM-G850UM phone.
[LG G8 Guides, News, & Discussion] GadgetGeekUSA:
If your phone is AT&T branded there is nothing you can do because it has something called an IMPL lock on it that prevents you from cross flashing. If the phone is a different brand then it should work as long as you follow the instructions step by step. Make sure QFIL is pulled up and ready to go BEFORE you put the phone into EDL mode and then press "tools/partition manager" IMMEDIATELY because EDL mode times out really fast and you will get a "Sahara server" error message.
[LG G8 Guides, News, & Discussion] RabbitTrax:
How can one verify if whether a phone is AT&T branded. I didnt buy it from AT&T; I got it from Ebay seller.
[LG G8 Guides, News, & Discussion] GadgetGeekUSA:
It will show the AT&T logo when you turn it on.
[LG G8 Guides, News, & Discussion] RabbitTrax:
It doesnt show an ATT logo when powering on. Still having a time updating this one.
[LG G8 Guides, News, & Discussion] joshuajau:
I get "OPID Mismatched" after trying all steps above.

This one is from SKT_KR to OPEN_KR

I encounter an error, during do the PARTITION_DL (It manage to bypass but get error near the end of completion, didn't manage to screenshot the error) and I decided to use "REFURBISH".

It keeps formatting and boot up back like this.

I have backup the necessary partition before this thing happens.

Any idea?
[LG G8 Guides, News, & Discussion] GadgetGeekUSA:
Do you have the "chip erase" option available as well in LGUP? I've seen some say ticking that box instead of partition dl worked for them. Obviously you're rolling the dice but supposedly for some people "chip erase" mode wiped the whole chip and installed the new ROM on the phone correctly. I swear there's a post somewhere on here of a guy claiming he tried that and it worked. Your call. Obviously there's a chance you might brick your phone.
[LG G8 Guides, News, & Discussion] joshuajau:
Yeah, I have the "CHIP ERASE" function inside LGUP. Mine was v1.33 (1.16 but patched) of LGUP (All option are available).

I have backup the modemst1, modemst2, fsg, fsc, ftm, modem_a, modem_b, OP_a, OP_b, SID_A, SID_B partitions earlier.

I only try restore ftm, modem_a, modem_b, OP_a, OP_b, SID_A & SID_B, but still get the OPID Mismatch. I'll try restore all partition that I backup and see if it works, if no, maybe CHIP ERASE is the final one (if really don't have any options left)

Update 1: CHIP Erase is not working at all. I try reflash the SKT_KR firmware back to my phone, and retry again from there.

Update 2: I reflash SKT_KR firmware back, and redo all the steps above again (backup necessary partition), except this time I uncheck userdata, SID_A, SID_B and check others, it works this time. stock camera crash at the beginning, but after I clear the app's data and reboot the phone, camera works fine again. I manage to restore my FTM partition but the NTT Error code (FFFFFF: 61) still comes out each time I reboot the phone. But I only ignore it since my mobile data, call and sms works.

I flash my LG V50s (LM-V510N) from stock SKT_KR firmware to OPEN_KR firmware. All of bloatware from SKT was gone (that's good).

I'll proceed with bootloader unlock, enable volte support and root the device (I'll refer other thread).

Cheers.
[LG G8 Guides, News, & Discussion] :
Hello, when you did this, were you in A11? Do you think it works in A12?
[LG G8 Guides, News, & Discussion] :
@netmsm Hello, friend, good night. I'd like to ask you a question if it is not a bother, is it possible that I can do the process you mention about fixing the "no deep sleep mode" if I did not make a full backup? The only backup I have with original files are "FTM, Modem_A, Modem_B, SID_A, SID_B, OP_A, OP_B", I don't have the LUN5 files, and I don't know if they can be used from another phone. I would like to cross flash and stay at A12 but I'm bothered by the no deep sleep problem.

Edit: Actually it seems I have the original Lun5 partitions, because when I crossflashed I didn't lose signal, and my IMEI works correctly. Can I make a full backup of those partitions without issues?
[LG G8 Guides, News, & Discussion] LGelashwili:
Hi, everyone. I have an LG G8 Xfinity version after cross-flashing the G820QM40a version it says "Service provider locked". Is there a chance to unlock the sim?
[LG G8 Guides, News, & Discussion] LGelashwili:
Hi, I have an LG G8 Xfinity version after cross-flashing, on the lock screen it says "Service provider locked". Is there a chance to unlock the sim?
[LG G8 Guides, News, & Discussion] LGelashwili:
@netmsm Hi, can you help me? I have an LG G8 Xfinity version, after cross-flashing on the lock screen it says "Service provider locked" Is there a way to somehow unlock the sim? Also, does the Xfinity version have IMPL lock?
[LG G8 Guides, News, & Discussion] umair928:
Hi, I have the same 64gb model as you are, Unfortunately I only backed up, Lun 5, ftm, modem_a/b etc and went with the chip erase option which erased all my partitions, anyhow I restored my partitions list, restored the necessary partitions for download mode but I can't enter download mode, device is stuck into fastboot mode, I even tried to restore multiple EDL roms ( sprint one and at&t one), but still no luck and download mode, I was wondering If you could share your backup, I would be very thankful to you. If anyone else was on the same boat as me and fixed their device kindly do let me know as well... Thank you
[LG G8 Guides, News, & Discussion] NaughtyDescent:
Unfortunately I sold the device and deleted my backup partitions too ... There's a guy in Lahore who can restore your phone I guess. He has Japanese ROM for lg g8x. Check your DM.
[LG G8 Guides, News, & Discussion] :
Hi, anyone here has the problem of no deep sleep mode in V50? I installed a kdz many times even the option of chip erase and nothing... Can someone help me pls?
[LG G8 Guides, News, & Discussion] Arrow_zk:
I did this but i can't restore LUN5 partition and FTM, i did the backup in qfil one by one partiton because i haven't seen your tutorial to make it in the cmd, so i have all the partition separate, but when i tried load the image in qfil i get the message "Send Image Fail:FireHose Fail:FHLoader Fail: Process fail" what can i do??

Edit:

I realized those backups are empty for some reason so is imposible to restore in qfil. i restore ftm and some partitions on LUN5 but most of them are empty so i don't have them, my phone still have the imei and works fine, but i got the "permanently locked" message so i can't use mobile data

Is there a way i can fix it?
[LG G8 Guides, News, & Discussion] rvp_178:
I crossed flash to CAN version but yesterday after do a factory reset, my G8 lost network connection and NT code 0 error. Do you guys know how to fix this?
[LG G8 Guides, News, & Discussion] anibabi:
I'm stuck in step C 4-5)

Could you help me please?

I'm using V50.

When I select KDZ file, press start and uncheck sid_a and _b, LGUP says "error: 0x6004, crossdl LGT_KOR >SKT_KOR"

And I can't overcome this process.

What can I do for next step?

Thanks in advance for your help.
[LG G8 Guides, News, & Discussion] x13igpoppa:
awesome!! worked like a charm!
[LG G8 Guides, News, & Discussion] Braxke:
How

did you manage to restore the original imei please and did you solve I have same issue
[LG G8 Guides, News, & Discussion] moncd6:
Hello there, I hope to find any help in here....

So I did the crossflash, but when restoring the FTM, MODEM A and MODEM B, I also took from a friend some of his LUN5 partitions (I know....dumb move right?)

Long story short, I paid someone to unlock my device again due to Perm Lock message. But after he tried several times, we got back my IMEI and SN, but I still got a "Service Disabled" message with no network availabilty.

Does anyone knows how to fix this issue?

I have tried...

Redo all the steps for Android 12 No luck

Replace Modem A, Modem B and FTM no luck

Please help, any assistance will be highly appreciated. There is someone at https://xdaforums.com/t/lgv50-500n-skt-service-disabled-lost-signal.4419699/

that provided modem A and Modem B, already tried those with no luck.
[LG G8 Guides, News, & Discussion] moncd6:
If you did not messed up with LUN5 partitions, I know a guy that can restore the unlock and your IMEI (if you know your original imei number for $15)
[LG G8 Guides, News, & Discussion] moncd6:
I got kind of the same issue. Right now I am at "Service disabled" where you able to solve your problem?
[LG G8 Guides, News, & Discussion] Braxke:
Hi what are lun5 pqrtitions please am willing to pay sir
[LG G8 Guides, News, & Discussion] moncd6:
Hello there!

On Qfil, when getting the partition manager list, you will see at the first column that says LUN, so everyone that says LUN5 partition needs to be backed up.

Unfortunately, this did not work for me. There is a user on Telegram who says he can fix this for $28.00. Called @UnlockLG

However, phone will go to stock firmware (Sprint in my case).

Still thinking if I will get that from him. Keep you posted.
[LG G8 Guides, News, & Discussion] ddeslandes1:
I was able to flash my aliexpress bought LG V50S from SKT version to OPEN_KR version to remove all bloatware. works perfectly now.

only downside is some of the more obscur menu are still in korean language but really not that big of an issue

I have yet to try to OPEN_CA (LG G8X kdz) because I am afraid of bricking the phone.
[LG G8 Guides, News, & Discussion] Braxke:
Guys please am willing to pay I messed up with lg v50 thinq 5g I have no backup of lun 5 partions.I tried a different ftm and wrote a different imei to my phone.My phone also doesnt show the serial number and when I tyr to insert sim card tells me the phone is permanently closed and cannot be unlicked please guys help.....am ready to pay guys
[LG G8 Guides, News, & Discussion] moncd6:
Hello, I was finally able to fix my phone.

There was this guy who actually took it back to Sprint Original Version for $25.00. I am unaware if this allow you to write me a personal message, if it does, more than willing to help.
[LG G8 Guides, News, & Discussion] Braxke:
Hello am sorry I dont know how to write a private message here would you mond if you whatsap me on this number +254 715 415671.Please am stuck with a permanent lock and am unable to receive pnone calls from same phone sir.
[LG G8 Guides, News, & Discussion] doctorman:
so G850UM G8x AT&T can not be updated? it is unlocked, bootloader unlocked , on android 10 of ATT. following this guide I can not update to 40c android 12 (CAN)?
[LG G8 Guides, News, & Discussion] Ebizza:
While i was trying to crossflash, i mistakenly hit "refurbish" in lgup. the process ran for a while and stopped.

Now, i'm trying to use partition dl, and it is stuck at OP partition. the process gets to 70% (OP S) and gives an error message. I tried to unselect the OP S partition (and SID of course), and the process got vompleted. but my phone was stuck in a bootloop, and then displayed some weird fastboot screen. I went back to Qfil and did all the process and lgup still gets stuck on the OP point.

this is not the first time I'd crossflash, so i know the 'refurbish' button i used initially caused this.

Anyone has any clue what i should do?

my phone is originally a sprint variant, but i crossflashed to Kor A12 and was running a custom rom (arrow A12) on the side. I'm trying to crossflash to Open Canadian A12

lgup shows OP S. shouldnt it be OP A and OP B? it still says OP A and B on qfil.

i also remember seeing something about a disparity in OP file sizes

any ideas guys? it is my daily driver
[LG G8 Guides, News, & Discussion] ozznox:
Hello bro.

I have partition of sprint,ftm,modem_a,modem_b,modemst1,modemst2,fsg and fsc,before crossflash KDZ EU android 10,start the phone but no signal.

I restored all partitions and just searching network,i cant get it work.
[LG G8 Guides, News, & Discussion] Wish39:
Hi @netmsm , long time no see!

Anyways, I have found where the OPID is checked on MTK devices. It is in the LK_a and LK_b partitions. Problem is that these partitions are basically the second stage bootloader, so wiping them like the SID partitions would probably result in the phone not being able to boot into download mode. I think I would have to hex edit the LK to remove the checks.
[LG G8 Guides, News, & Discussion] abdoulgaf:
i can confirm that your NT code worked for my LG G8X Sprint converted to Open CA. i just modified my ftm file with hex editor like how you suggeted. with the same digit you used. after replace ftm file phone reset itself and boom that anoying message at boot dispear. thank you
[LG G8 Guides, News, & Discussion] faiz 008:
How to xflash alphalm to alphaplus
[LG G8 Guides, News, & Discussion] faiz 008:
How to convert us to Korean lg g8
[LG G8 Guides, News, & Discussion] astharot28:
Ayuda perdi las copias de seguridad de modem a , modem b y ftm de mi lg g8x sprint ahora no tengo señal alguien que pueda ayudarme?
[LG G8 Guides, News, & Discussion] Cryomichel:
Anyone can tell me how to dump the camera app from stock Korean ROM please ?

I plan to flash Can_Open ROM to my Korean G8 and would like to use the stock camera app.

@netmsm solution I found requiers to root the phone and I would like to avoid this.

If anyone has a fix or just the way to dump the camera app, I would try it (Ibacked up every single partition available in qfil and used the other method to dump all partions).

Ultimate goal is to get VoLTE working on Korean G8 in Europe.
[LG G8 Guides, News, & Discussion] lu0ngvu:
what rom did you dowload for 500N? can you share it?
[LG G8 Guides, News, & Discussion] Lzlz3:
Hi op!

I'm stuck at rewriting IMEI on step 16C, my V50 in tutty says error with the old IMEI still attached. Any other way to rewrite?

I was tried to flash 4 firmware (VZW, 2 Open EU + 1 Open AU) but still wont grant me access to edit it from dial menu (the one with *#546368#*)

Thx anyway
[LG G8 Guides, News, & Discussion] cipionerick:
Any solution to fingerprint, after doing the crossflash? i´m have LG V50
[LG G8 Guides, News, & Discussion] Ryan Le:
I tried on my LG G8X. Everything works fine, fixed the blank SN and NT error, but the color temperature slider is now inverted. Warmer will make the screen more blue and Cooler will make the screen more yellow. Is there any way I can fix this? Thanks in advance!
[LG G8 Guides, News, & Discussion] Sameer 47:
I just successfully finished flashing my lg g8x from TMO_US to OPEN CA but I'm facing an issue that my phone doesn't catch signals when it's turned on until you don't turn on and off the airplane mode and when it catches the signals sometimes the outgoing and incoming calls data or messages don't work what could be the issue I followed these steps exactly as described ...
[LG G8 Guides, News, & Discussion] bernavaldiesel1:
Hello everyone, I have done the cross flashing process with an at&t lg wing 5g to european firmware from the open market. Everything has gone well but I don't have Internet. the nt-code warning came out. Do you know what I can do at this point? Thank you all.
[LG G8 Guides, News, & Discussion] bernavaldiesel1:
the warning appears: current version is not available for user: can't find matched carrier. check nt-code: 0
[LG G8 Guides, News, & Discussion] hrishi92:
Any idea if we can use this guide to cross flash V60 Tmobile to get 5G? OR would changing carrierpolicy.xml remove limitations on basebands etc. Please help. I have the phone rooted.
[LG G8 Guides, News, & Discussion] bernavaldiesel1:
As far as I know, you have already bypassed Google. Then you have to crossflash the .kdz from the open market in your country and that is the complicated part. If you already have all this, you just have to wait for them to offer 5G.
[LG G8 Guides, News, & Discussion] bernavaldiesel1:
Did you copy the ftm.bin? It should be 32kb. Afterwards you must edit it with hxd from pc with the nt-code from the open market. and enter the secret menu of the phone dial to enable more things.
[LG G8 Guides, News, & Discussion] bernavaldiesel1:
"1","FFF,FFF,FFFFFFFF,FFFFFFFF,82"
[LG G8 Guides, News, & Discussion] hrishi92:
Thanks so much. Finding that .kdz is a little difficult. The phone has not been launched my country (India) - so no proper kdz. Would you happen to know any kdz which could support most bands? 5G needs bands n28, n78 & n258. I did try from SVC menu. Did not help :/
[LG G8 Guides, News, & Discussion] Sameer 47:
Yes I restored the original ftm without ftm there were no signals and I fixed the ntcode error through the SVC menu is it different than doing it in hex editor?
[LG G8 Guides, News, & Discussion] bernavaldiesel1:
With hexadecimal, if I remember correctly you had to look for the line 00012000 and write the nt-code there. You have coverage but you don't see the 3g, 4g, 5g icon? Do you have the option to configure the apn of your data company? In that case in svc menu use the factory reset option (d&l only) and then in field test>universal enabler>create new and there you select the first option and the last 4 That should work for you, otherwise the FTM is not right.
[LG G8 Guides, News, & Discussion] bernavaldiesel1:
Try crossflash with a .kdz from the open or global market of Europe or the United States.
[LG G8 Guides, News, & Discussion] Opistorincos:
Hi, how did you fix the ntcode error with svc?
[LG G8 Guides, News, & Discussion] Opistorincos:
Yes, it works for v50 Verizon. I just crossflashed mine to open EU rom
[LG G8 Guides, News, & Discussion] bernavaldiesel1:
To repair the error on the nt-code screen blah blah =0 you have to have a copy of the ftm.bin file, what device do you have?
[LG G8 Guides, News, & Discussion] Opistorincos:
I have Verizon LG v50. I have a copy of my original ftm file.
[LG G8 Guides, News, & Discussion] bernavaldiesel1:
size? It must be about 32kb or so.
[LG G8 Guides, News, & Discussion] Opistorincos:
My nt code error is showing as 311480;FF
[LG G8 Guides, News, & Discussion] Opistorincos:
Size is 32.7kb
[LG G8 Guides, News, & Discussion] bernavaldiesel1:
With a hexadecimal editor such as the hxd app for PC, open the file and paste the nt-code on line 00012000. Save the file and enter it through qfil. You restart and enter the hidden menu. select Factory reset (r&d only) and then in field test>universal enabler>create a new>select the first option and the last 4 for vowifi calls etc.
[LG G8 Guides, News, & Discussion] bernavaldiesel1:
I could give you mine but my phone is an LG wing with ftm from Europe
[LG G8 Guides, News, & Discussion] Opistorincos:
How do I insert the 6 digits ntcode being shown at startup
[LG G8 Guides, News, & Discussion] Opistorincos:
Thanks a lot man. I'm not sure that's gonna work since our devices are different.
[LG G8 Guides, News, & Discussion] bernavaldiesel1:
I know a serious company that for €10 modifies it for you with anydesk. He created it for me.