Develop Bugs

connection error or invalid mmi code

Hello everyone i'm stuck with "connection error or invalid mmi code" since weeks and i'm not able to recover from it i've wide data/cache and nearly done everything i even change roms to roms.Firstly when i was on stock rom then there were no problems but as soon as i flashed leaked full sbf 2.3 on my defy and then i was not able to go back to stock then someone on this forum showed me the way to go back to 2.1 then then finally using nandroid backup i came back to froyo but that rom was not happening so i flashed CM 7.1 the problem starts from here or from nandroid so i decided to go to MIUI but the problem persits. So then i fully formated my memory card and then again went to 2.1 then froyo then to galnet MIUI i thaught that the problem has gone but some time when i call my cell no from my landline then it says nothing except blip blip that means i was not recheable.then i run USSD code and then finally it says "connection error or invalid mmi code" i'm stuck guys please help what should i do now my operator is Aircel india should ithrow my sim card or my phone i'm fed up with this problem can anyone suggest me a fix.
Any Help Would Be Appreciated
Regards,
h33t c01d

can someone help me out

I am also suffering from the exact same problem. I have tried many things. Finally one thing I know official roms do not give connection error.but they Reboot.
I am right now in testing phase (current rom 2.2.2 jem-3.4.3-33-1 ) try baseband switcher
Sent from my GT-P1000 using xda premium

i've tried using baseband switcher but still the problem exits and no one working on this issue this issue is persisting from 2 years but yet it has no solution.but if u full flashed stock sbf u'll get rid of this but u can't go to custom rom then

Official sbf do fix it. But it has problems of reboots. I think their is a hardware defect
Bcoz in official reboots happen to avoid connection error.and in custom rom reboot don't happen and hence connection error
I m fed up with this problem. Going to service center tomorrow.
(Will never take Motorola Device again. Samsung galaxy series are the best)
Sent from my GT-P1000 using xda premium

Does going to service center solve your problem

It was a faulty device. Returned it back to Infibeam. Hopefully I will get my new replacement tomorrow.
Sent from my GT-P1000 using xda premium

help me with this!

Dude you can do one thing just flash it with the full stock sbf and you'll get rid of the MMI error but there will be a new problem that your phone will reboot very frequently again and again many times in a day if you are okay with this reboots again and again then its fine but if you want to get rid of this then do one thing take it to the service center i hope so they'll not go deep and fix your phone. you just say them that its crashing all the time if the odds are even then you'll get your phone fixed or else they'll say you have void you warrentty i'm gonno try this now because there is no one helping with this

ok dont know if it will work for you but it worked for me
add comma (,) in the end of the code
example:
*100*2# into *100*2#,
works for me

Same problem
http://forum.xda-developers.com/showthread.php?t=1556718
I have the same problem with the MB525.Plss help!!
Best regards!

Help with Defy+ and custom ROMs

Ok, so here´s the deal:
I´ve recently got myself a Defy+ after my regular defy was stolen (no tracking software watsoever =/).
Since a lot of people told me the defy+ was just a red lens defy, i´ve thought that the same methods used for one were valid for the other.
Since it came with 2.3.4, I´ve just rooted it and installed 2nd Init. No problems until there.
The problem is: every single custom ROM I´ve tried installing through custom recovery (clockwork mod) gives me a bootloader error. I´ve tried CM7 and CM9.
It locks on the bootloader screen with the error, and won´t even let me get into recovery mode. Every time I have to restore a full sbf (only one I found to work), root, install 2nd init and then restore a backup from the original firmware I made.
Any ideas on what I could be doing wrong?

Did you try a Defy+ specific CM? Like http://forum.xda-developers.com/showthread.php?t=1445259
It has been reported that custom ROMs don't always play well with Defy+, and development on Defy+ is not as great as on Defy (due to its age). This should get better with time, look for CM9 and beyond.

i have tried this out and it has been working with battery charging to100% and camera also working.no 720p video tho.also has a few problems with cellular network reception.

After installing the init 2nt you can enter the boot loader?
You did a wipe data / cache after installing the new ROM?
You can post the error? photo ...

kernel panic no download mode.Help :(

so i flashed the official marshmallow for lg g3 on january. everything was fine. today the phone just stopped working. i had no previous signals like glitches or bugs, it was perfect but now its just gone.
so after this 3 months of usage, while listening to music, the phone stopped working (without even touching it)
if i reboot it, it gets me into a boot loop and when it doesn't its just black screen
SOMETIMES THO i have the luck of it booting but i cant do nothing as it constantly shows android.process.com stopped working (i dont remember the exact name) but anyway after 1 minute it reboots himself because of the constant crashes.
if i enter download mode i get a message that sounds like this:
KERNEL CRASH!
demigod crash handler: kernel crash!
*something about dload mode and get ram dump*
*here info about phone like revision and serial*
internal error: oops: PREEMPT SMP ARM
linked in: texfat(p0)
*random numbers*
*error codes*
Kernel panic - not syncing: fatal exception
sorry im so vague about it but im writing this from memory right now. if you need more just ask
as a matter of fact, the only thing that this phone has is the MM official rom flashed (poland one)
its not rooted neither with custom recovery
i still have one year warranty, if i bring it to them its ok or i have to pay? i say this considering mm hasnt arrived yet to my country through ota. the main thing im concerned is if i can recover any of my photos/videos/music as it has some sentimental value but its not a must, the main priority is to get the phone working
and also the phone is recognized as lg g3 when plugged in computer, put cant enter download mode because of the reason above.
no recoveries as i said, and im pretty sure that if i get somehow to factory reset it will stay the same as the kernel doesnt get reflashed (im not a pro, just intuition, correct me if im wrong)
any help is appreciated!thank you in advance

just if anyone gets this problem and doesn't know how to solve it, its a hardware problem, not software, so warranty does cover it
As they won't give me much details, the only thing i know its that a specific component from the phone stopped working
does anyone have an idea of what component from the phone is responsible for that? just so i have an idea of what happened.

Friend of mine got this issue. I changed his emmc, and now worked perfectly
Sent from my LG-D855 using Tapatalk

same issues as mentioned above
wiwid.colgate said:
Friend of mine got this issue. I changed his emmc, and now worked perfectly
Sent from my LG-D855 using Tapatalk
Click to expand...
Click to collapse
can u plzz tell in detail how u fixed this

[D855 32 GB] Reboot problems (brick or hardware defect?)

Hello guys,
I managed again to brick my phone.
I flashed Fulmics as I wanted to swap from those not fully stable nougat roms. Well, I have no idea what caused my problem - Fulmics run without prolbems for a 2 or 3 days including xposed etc.
Then today I changed my ChromePie options and that's when the reboots began. I don't know if this the real cause was though.
So I tried to flash another rom but always got random reboot even in recovery after few minutes/seconds. So I went all the way back to stock rom (4.4.2) with LG Flash tool - which worked after a few tries. Then I installed MM rom via .kdz file and flash tool 2014, which also worked after a few more tries. But then the reboots started again. Can't say if the 4.4.2 rom was without boots because I updated to 6.0 quite quickly.
The strange thing is that after some reboots phone won't boot again and I have to take and leave out the battery for some time to boot the phone again.
Any solutions for my problems?
Best regards

..bumped into the same 1/2 year ago. Didn't want to put to much effort so,..went to stock and back, worked for me.
Good luck.

Gerhard.M said:
..bumped into the same 1/2 year ago. Didn't want to put to much effort so,..went to stock and back, worked for me.
Good luck.
Click to expand...
Click to collapse
Which stock and how did you go back?
As mentioned I already went back to stock but the issue kept occuring.

Hi, got the same problem with my G3
wi fi and bluetooth didn't work and phone loop rebooted
Here below the steps I followed to solve
1) First attempt (didn't solve): had cloudy rom, got back to stock official but still rebooting, tried fulmics and other rom but problem persisted.
2) second attempt (didn't solve): went back to stock and changed battery (found somewhere in internet), now I have a brand new battery but a phone still loop rebooting
3) third attempt (SOLVED): found that the wi-fi / bluetooth chip (one for both) copuld have unwelded and solved so (it appears I can't post outside link, delete spaces to have the correct link):
youtube .com / watch?v=1zWpzYh2DPI&t=15s"
youtube .com/ watch?v=6_0jzp65eLY&t=256s
Now i'm on fulmics and no more loop reboot
Hope you can solve
[sorry for my english]

frosty234 said:
Which stock and how did you go back?
As mentioned I already went back to stock but the issue kept occuring.
Click to expand...
Click to collapse
http://stockroms.net/file/LGG3/D855/European/BIN_LGD855AT-00-V10e-EUR-XX-JUL-08-2014-32G-0.zip
http://storagecow.eu/index.php?dir=Xda/LG+G3/Stock/D855/
used flashtool
have to say restoring and/or flashing isn't always that stable. I've experienced it sometimes needs a 2nd try.
Hopefully it isn't a hardware issue in your case.

So I tried all of oyur suggestions but nothing seems to work.
On the contrary I ended up in a status where I can't even flash a new firmware.
In LG Flash Tool 1.8.1 I get the error
"Donwload Fail!!!"
PID: NULL
IMEI: NULL
MODEL:
DLL: D855
BIN: LGD855AT.....
SWV:
SWOV:
Model Information Check Fail!
000000000
Click to expand...
Click to collapse
In LG Flash Tool 2014 (flashing MM with kdz file) phone shuts down in middle of process.
But I can still access Download Mode.

No more ideas?
I really think I finally broke my phone... But the fact that I can still access download mode keeps my hopes up.

So, after 2 months I just tried to reawaken my phone. Still the exact same problem. It just keeps shutting down aber some while, but just when I start flashing something. If it stays connected to computer whitout doing anything it can stay on for like ever.
Can anyone confirm that this could be a hardware defect?

Mi6 random app stopped and random restart

Dear all,
This is first time i start a thread here, so I am sorry if this thread is improper.
I really need help about my Mi6.
I have been using mi6 for more than a month. I use miui eu stable 9.2.4.0 from the begining. I used this phone for normal usage : social media, email, browsing, and sometime for game. Everything was flawless until Last week.
Suddenly I got many error message : goggle play services has stopped, facebook has stopped, gallery has stopped, and many other similar message. And the worst is my Phone always restart randomly.
I have no idea what happened. As long as I remember, I didnt do any peculiar activity. Then i try to flash other ROMs : other miui eu, miuipro, globe rom, stock miui 9 stable and dev, and even lineage os 15.1, I already performed format data, wipe anything everytime I flash any ROM. But the result still same, i still got error message and random restart.
Hopefully there is no problem with the hardware. Because there is no problem when I use twrp for flash, wipe, and other activity. I also already try Stress Test using Antutu and the result was good.
Is there anyone here can help me? I already desperate about this thing
Thanks in advance.
Regards

Use miflash and restore stock rom erasing all the data

camp70 said:
Use miflash and restore stock rom erasing all the data
Click to expand...
Click to collapse
Already try clean flash using miflash but the problem still exist.