[Q] Can I downgrade my firmware? - LG Optimus 4X HD

Hey guys, I wanted to ask about this issue. I want to downgrade my firmware from v10f to v10c. is this possible?
I live in Turkey and v10f update didn't come here over OTA so I chose to upgrade via this method. Can I do downgrade via the method?
Thanks

KoreaFAN said:
Hey guys, I wanted to ask about this issue. I want to downgrade my firmware from v10f to v10c. is this possible?
I live in Turkey and v10f update didn't come here over OTA so I chose to upgrade via this method. Can I do downgrade via the method?
Thanks
Click to expand...
Click to collapse
If you can?... Its the only way!
Don't forget to read everything and perform a factory reset in the end.

Related

[Q] question to upgrade firmware?

Should i upgrade firmware in kies? because i downloaded new update kies. then
then start. then it's say firmware can be upgrade? will i get froyo right now? -_-.. sorry
im such a noob.

[Q] Change Firmware still receives OTA update?

If i change my 4x firmware to another countrie (ex: update to austrian firmware , a 4X bought in honk kong), will i still get the Austrian firmware future updates via OTA or just KDZ ?
profyler said:
If i change my 4x firmware to another countrie (ex: update to austrian firmware , a 4X bought in honk kong), will i still get the Austrian firmware future updates via OTA or just KDZ ?
Click to expand...
Click to collapse
No idea... you can downgrade to an older Austrian version and see what happends, how the phone upgrades...
If you do, don't forget to give feed back
ive upograded from v10c to v10f and then revert back to v10c
before update i get 7.6mb update ota but after update im not getting it dont have any clue
maybe kdz is updated version dont know
oktay50000 said:
ive upograded from v10c to v10f and then revert back to v10c
before update i get 7.6mb update ota but after update im not getting it dont have any clue
maybe kdz is updated version dont know
Click to expand...
Click to collapse
didnt understand what you mean.
You reverted back to 10c and after that you updated to 10f via OTA and it was only 7,6mb? But did it update to 10f via OTA?
oktay50000 said:
ive upograded from v10c to v10f and then revert back to v10c
before update i get 7.6mb update ota but after update im not getting it dont have any clue
maybe kdz is updated version dont know
Click to expand...
Click to collapse
I didn't understood... can you explain?
After update you're not getting what?
After upgrade from V10C to V10F, you went back to V10C, and now you don't have upgrade notification to V10F?
Is that it?
I think you will. The .kdz file is a complete image and the FOTA program is included, so it should not stop you from getting those updates. However i've never needed to flash a .kdz, so can't tell exactly. But why worry? If the OTA doesen't work, you can still flash it manually.
first phone was on 10c and ota found update with 7.6mb
i decided to update 10f kdz and updated to 10f
and thenn want some persian lang and rtl support so i re falashed v10c and tried ota but found nothing
oktay50000 said:
first phone was on 10c and ota found update with 7.6mb
i decided to update 10f kdz and updated to 10f
and thenn want some persian lang and rtl support so i re falashed v10c and tried ota but found nothing
Click to expand...
Click to collapse
Thats wierd. Did you flashed to the same firmware as before (original 10c) ? same countrie?
oktay50000 said:
first phone was on 10c and ota found update with 7.6mb
i decided to update 10f kdz and updated to 10f
and thenn want some persian lang and rtl support so i re falashed v10c and tried ota but found nothing
Click to expand...
Click to collapse
you just gave me an idea... thanks.
I flashed Euro ROM and when I run software update, it said device is not registered. I flash back to original ROM and software update work normaly
igoen said:
I flashed Euro ROM and when I run software update, it said device is not registered. I flash back to original ROM and software update work normaly
Click to expand...
Click to collapse
thats odd
profyler said:
thats odd
Click to expand...
Click to collapse
I will install 10a firmware from brazil, in a 4x bought from germany, then try to update do 10b (also brazil). Will tell you guys if changenging the fw does affect the SW update.
muellersmattes said:
I think you will. The .kdz file is a complete image and the FOTA program is included, so it should not stop you from getting those updates. However i've never needed to flash a .kdz, so can't tell exactly. But why worry? If the OTA doesen't work, you can still flash it manually.
Click to expand...
Click to collapse
by flashing manually, you mean with the Lg Mobile tool? does it wipe your data/games?
profyler said:
by flashing manually, you mean with the Lg Mobile tool? does it wipe your data/games?
Click to expand...
Click to collapse
Using LG Official software will delete everything, at least with me...
You can upgrade using the tradicional unofficial method to keep the apps that you have.
I use to flash with the web upgrade/ official tool but, when I'm just "playing" with the "flash" (using the unofficial) all my apps, setting, everything remains, no matter if I upgrade or downgrade and if I downgrade and upgrade again...
But if your goal is to see if the official software upgrades, its better to do a backup!!!
RuedasLocas said:
Using LG Official software will delete everything, at least with me...
You can upgrade using the tradicional unofficial method to keep the apps that you have.
I use to flash with the web upgrade/ official tool but, when I'm just "playing" with the "flash" (using the unofficial) all my apps, setting, everything remains, no matter if I upgrade or downgrade and if I downgrade and upgrade again...
But if your goal is to see if the official software upgrades, its better to do a backup!!!
Click to expand...
Click to collapse
cool. Phone is coming tomorow from germany . Will flash it tomorow and tell you guys.
But im shure people already flashed with another continent firmware, but didnt tell us here if they are receiving update.
profyler said:
cool. Phone is coming tomorow from germany . Will flash it tomorow and tell you guys.
But im shure people already flashed with another continent firmware, but didnt tell us here if they are receiving update.
Click to expand...
Click to collapse
What do you mean with "continent firmware"? The latest in europe (open, all languages. To be honest I don't understand why there are open_portugal; open_italy; etc... if the firmware is the same) is V10F, in Brasil V10B...
But there you can use the europe V10F
RuedasLocas said:
What do you mean with "continent firmware"? The latest in europe (open, all languages. To be honest I don't understand why there are open_portugal; open_italy; etc... if the firmware is the same) is V10F, in Brasil V10B...
But there you can use the europe V10F
Click to expand...
Click to collapse
There is no Brazilian portuguese language on europe firmware, only portuguese from portugal. thats why im moving to brazilian 10a firmware. after that, i will check if OTA update itself to brazilian firmware 10b.
If NOT, than updating the firmware from one countri/continent like europe for example, to another countries firmware like brazil for example, affects the OTA update.
thats what im going to test tomorow. Im shure people here changed their`s firmware to another region one, but no one told if it still receiving update.
profyler said:
There is no Brazilian portuguese language on europe firmware, only portuguese from portugal. thats why im moving to brazilian 10a firmware. after that, i will check if OTA update itself to brazilian firmware 10b.
If NOT, than updating the firmware from one countri/continent like europe for example, to another countries firmware like brazil for example, affects the OTA update.
thats what im going to test tomorow. Im shure people here changed their`s firmware to another region one, but no one told if it still receiving update.
Click to expand...
Click to collapse
I know that the european version only have PT-PT, but the difference is that big? The improvements in the firmware are not better than the language issue? And that issue it will be in a few cases cause in the keyboard for example, if you choose SwiftKey 3 you can choose PT-BR and in a lot of other apps...
The update OTA... probably you'll see here posted the update first than in your phone.
Is just an opinion, you do what you think its better of course.
Anyway, enjoy your phone and wish you good luck whatever you decide
i tried to update via OTA , but it says, phone not registered. I registered in lg web site but still gives me the same emssage. Should it take a while, or where do i need to register in order to check for updates?
OK, it happened what i suspected:
the phone update itself (not via OTA because it didnt worked for me) to the latest firmware by CHECKING YOUR IMEI. It means that if your original stock firmware is EURO for example, and you install Asian firmware for example, it wont update to the latest Asian firmware, but to the latest EURO firmware because it will check your imei that is Euro, not the firmware you have.

[Q] Update 4.1.2 by kies after root??

Hello, I wanted to ask a question ... after doing root, I can upgrade to 4.1.2 by kies??
Thanks
Couldn't say for sure, but I was certainly able to reinstall the original firmware via kies after I couldn't unroot completely.

Updating With Kies Or Odin?

I still have the original stock Gingerbread ROM. If I update to stock Jellybean via Odin, will I still receive OTA updates? Or would I need to use Kies to guarantee future OTA updates?
EViS said:
I still have the original stock Gingerbread ROM. If I update to stock Jellybean via Odin, will I still receive OTA updates? Or would I need to use Kies to guarantee future OTA updates?
Click to expand...
Click to collapse
if you update the stock rom without root.. u will still get update OTA.. it doesn't matter if u use kies or odin for that.. just keep the stock rom and do not root for OTA update
Thanks for the reply. Do I need to flash the rom version which would usually be sent OTA by my network to receive future updates? If so, which version do I need for T-Mobile (EE) UK?

Sim not working after flash

Hi guys, i have a problem.
I've tried to install xposed but i bricked my device, so i flashed the old firmware (only cust.img,boot.img,system.img and recovery.img) and now..the phone is working but the sim is not detected..any idea to solve this?
[UPDATE - I've stock rom and i'm on b133 firmware]
You need to go to stock firmware B052, stock recovery and wipe data after fully installation.
Then you need to do an OTA update to 170 and then and OTA update to 180.
After update to one of those OTA updates, your ril (sim) will work again without a problem.
olrak said:
You need to go to stock firmware B052, stock recovery and wipe data after fully installation.
Then you need to do an OTA update to 170 and then and OTA update to 180.
After update to one of those OTA updates, your ril (sim) will work again without a problem.
Click to expand...
Click to collapse
Can you tell me in which way i have to go to stock firmware B052? By fastboot flash?
And can you provide me a link please? I don't now what version to download (i'm in italy and when i bought the phone it was with b133 installed, so the north europe version?)
Thank for your answer...
giusedeppa said:
Can you tell me in which way i have to go to stock firmware B052? By fastboot flash?
And can you provide me a link please? I don't now what version to download (i'm in italy and when i bought the phone it was with b133 installed, so the north europe version?)
Thank for your answer...
Click to expand...
Click to collapse
Here is the post, http://forum.xda-developers.com/p8lite/general/huawei-p8-lite-android-6-0-marshmallow-t3309796 download the B152 firmaware and flash it, you can follow the instructions provided by the OP. after that maybe you will recover yoir IMEI or you wont, in any case just update via OTA to 177 version and the IMEI will be restored, exactly the same thing happened to me and that was how I solved
regards
PD In the case you have the balong issue here is the fix for the B152
You can also download it from here:
http://hi6210sft.blogspot.be/2016/05/unbrick-huawei-p8-lite-via-fastboot.html#more
that happended to me when i downgraded but if you OTA update that should sort the problem out, thats what work for me anyway.

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