Well I beat the retail demo software, but didnt like even after a official update on the phone itself it kept me at android 8.0 os
so i went ahead and wanted to install android 10 rom off sammobile. It went through without a hitch in odin..but then got the dreaded "security check fail modem" in red text and this phone has been locked and unauthorized software has been installed on this phone with the blue screen background.
Any ideas on what rom I could use to install on this to beat this modem check issue? I tried 3 different roms and all the same message, they all load via Odin fine and PASS green box, then reboots and same message.
Supposedely I found a original stock rom for the demo model but its some 1 file-combination file. Still searching to see what else I can find.
Let me know if theres a workaround for the red text modem issue.
EDIT: just to make clear, i only want to use wifi on this device for apps, I realize it cannot be used to make calls or being used on cellular network, thats fine with me.
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I'll give you all the info I can as this has all happened since last night.
Yesterday I was bored, and decided to Root my SGH-I747M [Virgin Mobile, runs off Bell I believe] I used to jailbreak my apple products all this time, my S3 is getting old so I figured heck why not. I was curious about all the Kit Kat hubbub lol.
I Rooted it successfully, then installed the CyanogenMod 4.4 Nightly Custom Rom onto my phone.
That was also successful minus two things that happened, I don't like some of the features & I lost cell service [NOT due to and EFS/IMEI issues]
Decided to downgrade and unroot as the only reason for rooting was to install Kit Kat.
Unfortunately trying to Unroot something went wrong, after pushing start in Odin and my phone froze in Download Mode and Odin failed.
After rebooting my phone I got the typical "Firmware upgrade encountered a problem" so I hooked up to Kies, entered my phone model and s/n and did a full Firmware recovery.
Still had no cell service, could make calls but no SMS.
Found a post that said to take out battery, take out SIM card, boot, then take battery out, replace SIM and reboot.
I believe I have full service back with no issues.
But after the Kies recovery, I have this constant screen on my phone as picutred in the attachment!
I can use my phone, I can touch anything/everything it doesn't block anything thats behind it, but that screen stays. It goes away if I need to go into settings but it comes back shortly. My phone is also still set as "custom" in the info so I'm assuming it's still Rooted???
Update: A friend of mine suggest doing another Kies recovery. So I'm waiting for that now.
And I'm not sure if it's still rooted, Went to settings>More>About Device>Status> And Device Status reads Official.
Alrighty another update incase anyone reads this and can either help or point me to help lol, I am searching forums/google like crazy trying everything.... I figured out that the screenshot is showing me factory mode is on.
Turned it off, after re-rooting and installing SU/Root Explorer.
So factory mode is off, now my only problem is Mobile Network: Disconnected despite Service State: In Service and all the other stats seemingly normal?
It seems I can make calls, but I can not use data or send sms/mms.
Ok so I did a ton of stuff to my phone like rooting, flashing different ROMS, but in the end I want to get my phone back to stock, so I flashed the stock firmware with LG Flash Tool but now I can't call anyone and incoming comes don't come through. I just get a "out of service area" after a while whenever I try calling someone. Texting works and internet works, and so does Wifi. Also, my time is 3 hours fast when it's set to automatic in the settings. I don't know why it's doing this. And my IMEI is 0. Here are some pictures of my settings. One more thing. Since I flashed the stock, in my android devices, Google doesn't recognize my old device anymore. It treats this phone like a new device now. Weird... Anyone know how I can fix this problem?
Oh and when I try to update my phone it gives me this: "Your phone is not registered yet"
So many problems, I'm so sad
(these are the images uploaded online if the attachments don't work)
postimg (DOT) org/image/yc356c9el/
postimg (DOT) org/image/ipnwgre97/
Do you have a EFS backup? Your IMEI is 00000000000000.... That's NOT the way it should be. Maybe the network provider blocks you from using the network because of an invalid IMEI (don't know for sure) but since you reflashed Stock ROM i don't think it's modem related...
I think I fixed it! I just used the kdz method of going back to stock instead of the tot/dll method and it fixed my problems! I got it from this thread if anyone else has the same problem:
http://forum.xda-developers.com/verizon-lg-g3/general/guide-flash-to-stock-10b-kdz-method-t2928140
Okay so i have the T-Mobile Galaxy s3. It has been rooted for a while with zero problems. I got tired of the older android on it and decided to install a rom. I installed Cyanogenmod 13.0-20151208-unofficial-d2tmo running android 6.0.1. When i first got it all booted and loaded with gapps, i noticed that it recognized my sim and that i had a signal but i couldn't use any LTE or just all around data. basically i couldn't go online (in case i just didn't explain that well enough. Phone service is a mystery to me). I did some searching online and found a lot of people saying that i needed to update my baseband. i found a baseband for my model (T999) and tried to flash it in TWRM. Once i rebooted, it said "No SIM card - No service." in the upper left-hand side. i have tried flashing multiple different basebands the same way with no luck. i tried backing up my EFS folder and the restoring it because someone said to do that and that just... just no... it didn't do anything. even Odin 3 said it was a "FAIL!". So here i am with this android equivalent to an Ipod and i hate this. Everything else in this ROM works perfectly aside from this but this is a super big problem. PLEASE HELP!!!! A phone isn't a phone if you cant even send a text.
Did you update the phone's bootloader and modem to the latest version before flashing CM?
Ok there's a short version to this and a long version, I'll start with the short version....
After a lot of tail chasing I've almost got the phone 100% back to how it should be, it seems that the only thing left to sort out is for me to be allowed to use USB instead of UART to reset my IMEI (got wiped out, "unknown"). Is there any reason why it wouldn't stick or a way to resolve it? The phone states "USB_Diag selected", "Change Complete", etc.... but when I click back it's still on UART. I've tried rebooting direct from that screen, coming out and rebooting, using the home button, etc, etc, etc. For whatever reason it just wont stick?
Long version......
I wanted to unlock the phone so that I could try out a payg sim that I was having issues with (only phone with a micro-slot). At first I tried to unlock it which didn't work, it suggested installing a prior baseband version of modem to get it to work so I tried that and it came up baseband unknown, imei unknown, etc, etc, etc. Fun fun fun. A bit of panic set in and I started installing anything I could find, I soon found myself with a "image resolution" boot error, which I believe was down to me trying to downgrade to 4.2.2 when 4.4 had already been installed. I eventually got myself back on an even keel but I'm still left with the IMEI unknown error. I'm trying to set it to the default using Samsung Tool Pro (24.3) but I keep getting an Access Violation (004074E0). I've disabled UAC just in case it wasn't fully running in administrators rights (which I had set it to do) and I've tried everything else I can think of. The one thing through browsing around that I can't get set properly is the 9090 menu to have USB instead of UART.
Info:
Model - GT-I9195
Version - 4.4.2
Baseband - I9195XXUCNJ5
IMEI - Unknown
Oh, one other thing that I recall. When selecting "Reset MSL" in the Samsung tools it said it completed successfully but my phone didn't reboot? I wasn't sure if that had anything to do with it. Secure boot status shows "Samsung"?
I have managed to force the IMEI using xposed but I would prefer not to go down that route if possible.
Thanks for any help
Hey all, so a friend has a G920P (I think.. it's an unlocked Sprint), totally vanilla and it lost wifi after the last update which she states went to 7.x (from 6.x).
She has no intents to root it, and it's not mine, so I tried helping her out. She downloaded the 7.xfirmware from sammobile and set it back to that via Odin, and it booted up just fine but still had no wifi, so basically back to square one.
So she then downloaded 6.x (from sammobile), and I went back home... and she's informed me that now she's getting a "checking connection" thing flashing. Does anyone know how to fix this?
Tincan17 said:
Hey all, so a friend has a G920P (I think.. it's an unlocked Sprint), totally vanilla and it lost wifi after the last update which she states went to 7.x (from 6.x).
She has no intents to root it, and it's not mine, so I tried helping her out. She downloaded the 7.xfirmware from sammobile and set it back to that via Odin, and it booted up just fine but still had no wifi, so basically back to square one.
So she then downloaded 6.x (from sammobile), and I went back home... and she's informed me that now she's getting a "checking connection" thing flashing. Does anyone know how to fix this?
Click to expand...
Click to collapse
Did you ever solve this?