[Q] Roms and Basebands, signal problems - especially promethius custom rom... - LG Optimus 3D

Hi,
There's something I just don't get it.
I have an latin america p920h that was running Stock GB v20a.
I've flashed promethius rom and kernel, but it made my signal go away and I got no IMEI under settings/phone info
My question is, is it possible to flash custom roms with different firmware versions? In this particular case flashing an v20f when my original rom was v20a without having signal problems?
Tried v21 and v20 promethius with no luck, no signal no IMEI.
I've heard that flashing stock KDZ could restore my signal, but it also means no custom rom...
(BTW lost my backup, used it once and made my phone brick... so using it is not an option lol)

flash 20p kdz and then install promethius or any other rom based on v21e

Related

[Q] stock rom v21a

Hi all.
Please help.
i have v21a baseband with custom rom (thiaiz03D). I want to flash the stock rom v21a. Is it possible to find stock rom in zip format. I think is more easy to flash it via cwm.
Only if someone made a nandroid backup before they installed or flashed anything if not then kdz flash method will get you to stock
sent from my acidhazard thrill

Help regarding ics rom for su760 korean

hi everyone,
I have a huge problem on my LG SU760 KOREAN. ITS UNLOCKED AND HAVING (LG SU760_V30B_ICS.)........
BOUGHT IT 2ND HAND FROM A SHOP. AND TRIED TO ROOT AND INSTALL CWM. BUT AFTER REBOOT INTO RECOVERY. It got Black and Dead (Bricked)
I have tried all the guides. and the SMART FLASHER WORKED FOR ME. BUT IT WIPED OUT MY IMEI AND WIFI ADRESS.
i DONT KNOW ITS IMEI, AND NOT WRITTEN ON ITS BACK COZ ITS KOREAN. ITS SIM LOCKED.NO SIGNAL.
I have current flashed it with V20e rom but thats for P920 not for su760
.can anyone solve my problem.or give me BIN ROM LINK OF ICS SU760 V30B LINK.SO I CAN FLASH IT AGAIN.
man I have the same, and with smartflashtool I flashed V30B, (pay attention to option that must be UNCKECKED) after extracted CP and AP .bin file from KZD (search for extract bin from kdz)
than enabled "unknown source" and "debug usb"
than used adb_restore_rooting-v1.6 to root the original kernel
than used P940RecoveryInstaller.apk to install TWRP (or CWM)
now you have a fully rooted ICS original Rom,
if you want to install other kernel, or mod the built in kernel i suggest to install omap4boot-for_optimus-v1.25a in fastboot mode, to install new wpark bootloader (change lg icon from red to white) mostly needed for secure flashing new rom
I can send you my bin if you have an host somewere
PS. I loose my Imei when i flashed V20 don't know why (and I do it with lg flash tool) I recovered it simply when I used smartflashtool to flash v30b
Thanks
thankkkk you so much bro..
I just Flashed V30b ICS FOR SU760 the same I got the phone..
But Can U please give the details on how to recover imei or unlock phone.
I don't have any backup.
I HAVE ALL THE SOFTWARES,DRIVERS INSTALLED.
AND THE 3845*720# METHOD NOT WORKING,, IT SAYS : SYSTEM IS REORGANIZING,, PLEASE WAIT AND TRY AFTER SOME TIME.
rEPLY ASAP..!
THANKS
sorry I cant help you becouse I recovered it by flashing v30b when I lost it flashing v20
you can try to use original lg flash that have a recovery option, but first you have to downgrade to an older firmware
or searching on forum "Recover IMEI", seems to be two thread about this
Rooting Stock ICS v30B on su760
Hi razorjack81,
I have V30B stock updated from LG site, did you use the stock V30B or the Xball V30B ported for P920 users?
If you had Stock V30B for su760 kindly guide me how you were able to root it ( I would appreciate if you could make a step by step guide :silly
Thanks in advance.

Flashing new baseband - IcySnap Rom

Hi
I want to flash the icysnap Rom and I understand that I need to flash a new baseband (I am running the stock 2.2.1 that came with the phone) my question is do I need to flash the baseband before of after I flash the rom???
And another question is when I connect my phone to the pc when I upgrade the baseband does it need to be on or off??
Thanks in advance!!!!
its more safer to install the new baseband v20 before you flash the rom thats what i did works perfect
thekidelvis said:
its more safer to install the new baseband v20 before you flash the rom thats what i did works perfect
Click to expand...
Click to collapse
Ok great
Thanks man.
If you flash stock GB ROM using KDZ, then your baseband will be updated automatically. Here's how to do it: http://forum.xda-developers.com/showthread.php?t=875881.
Else, you can search for updating the baseband via LGMDP. There's no harm doing it before or after flashing a ROM supporting new baseband.

Phone doesn't work with any custom ROM's

My phone is with android 2.2 stock rom, rooted and with flashed recovery cwm 5.0.2, but when i tried to install any custom ROM's IMEI number is unkown and no have GSM signal. I sucessful reinstall stock rom with kdz updater, but can't to use any custom roms. Any possible solutions ?
Old baseband fix
When I try to update baseband it say this - You cannot download this image without its header file. I tried with v10 and v20 versions.

Flashing telco's baseband onto stock firmware

I have a Z3 with stock prerooted firmware and would like to flash my telco's baseband to see if it will fix some issues.
Is this do-able with the flash tool? Is it possible to do this?
Also, are basebands strictly for the version intended?
It's been a while since I last flashed the rom so can't remember the tools.

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