Enable Global GSM on G4 Sprint (LS991) without ROOTING

[mkhmer]

I just tried a few trick that all member in here post, and rewrite it in easy step.

For someone who own LG G4 LS991 SPRINT network which is only CDMA and want to make it work on global network whether it is GSM/LTE/CDMA, ... all work.

- No Need to ROOT your phone
1- Connect your phone to PC and transfer the International ROM found in link below, direct under your phone INTERNAL STORAGE
*** ZV6 ROM
*** ZV9 ROM
2- Shut Down you phone
3- Start download mode (Hold Volum Up button and Plug USB cable)
4- Run LGUP re-flashing your current ROM Version (same rom of your current running one) ZV6, ZV9... whatever
5- Look at the progress % bar, when it reach 9%, unplug the usb cable and close the LGUP software
6- Your phone will stay in DOWNLOAD Mode with GREEN TEXT show COM##
7- Run sendcommand tool with specific COM## shown on your mobile screen
8- Run dd command to replace the ROM image you saved inside your INTERNAL STORAGE into your mobile system as instructed in step 1- LINK
9- Wait under the replacing done and you will see the hash tag # appear on the new line
10- type LEAVE to exit your download mode and restart the phone

Cheer, that's done you phone is loading with ROOTED International Network enabled.

If you have your phone done, please simply click THANK....

Also thank to all XDA Developer member for all the reference included in this thread.

 

[melvinchng]

Will updating PRL and profile overwrite the Global SIM?

 

[Mortal Eternity]

someone tried it as yet? seems a bit risky removing the phone while flashing a rom dont you think???

Also need some elaboration for these 2 steps please:
7- Run sendcommand tool with specific COM## shown on your mobile screen
8- Run dd command to replace the ROM image you saved inside your INTERNAL STORAGE into your mobile system as instructed in step 1- LINK

 

[sunilromy]

OP please ADD a disclaimer, THIS METHOD IS TOO RISKY. Just a 1 second delay can brick your device with no download mode. few members have bricked their device by flashing phones with this method, @Agimax and @tabp0le .

Try the long route posted by other member, its safer then this one.

 

[mkhmer]

With those two link ROM, they are GSM enabled already.... it's not too risky. It's definitely work.

I already did on a few phone and all success, never fail.

 

[who006]

please give zvB rom

 

[mayrer]

please give zvB rom

https://qui.click/mmzvb101-gsm

 

[alex1080]

Am I right that for ZVB I should send this command (only change img name)?
dd if=/data/media/0/MellowMallow_LS991ZVB_v1.01_Global.img bs=8192 seek=65536 count=557312 of=/dev/block/mmcblk0

 

[mayrer]

Am I right that for ZVB I should send this command (only change img name)?
dd if=/data/media/0/MellowMallow_LS991ZVB_v1.01_Global.img bs=8192 seek=65536 count=557312 of=/dev/block/mmcblk0

Yes

 

[who006]

is there any video that using sendcommand on lg G4?

 

[Adriantech]

When i put LEAVE my phone dont reboot, sorry for my bad english

 

[Tyranicy]

can someone please help me, I've been trying to get my phone to global for ages but im struggling with this. i dont know where to go, what links are what and which ROM i should run or insert. If theres the video or someone PM me that would be great C:

 

[poog]

will this method work for an LS991 on ZVC marshmallow stock ?

 

[motiam4]

anybody tried it on zvc please?

 

[hurstian]

has anybody tried it on zvc yet?
Thanks.

 

[ismael_mj23]

I've successfuly done this process in ZVC but i'm not able to select gsm mode.

Only options are CDMA and LTE.

 

[Manuel Rodriguez Collado]

I tried on ZVC but the phone only restarts

LG G4 LS991.
LG G3 D850 ROM Fulmics 6.6
Recovery TWRP v2.8.7.0 bumped

 

[Jpitel]

Does the send command tool only run when the COM port is enabled?
because you try to run it to see if it works, before you activate the COM port and it does not run

 

[TheMadScientist]

Does the send command tool only run when the COM port is enabled?
because you try to run it to see if it works, before you activate the COM port and it does not run

The send command was closed a while back on zvb you have to force open it throught a dangerous method.

 

[steadfasterX]

The send command was closed a while back on zvb you have to force open it throught a dangerous method.

Or just use FWUL with lglaf which is not dangerous..

Sent from my LG-H815 using XDA Labs