I have an AT&T I747, and tried to install the OTA update to 4.4.2. After completing & rebooting, the phone got stuck on the white AT&T screen. I flashed stock 4.3 back onto the device, but now have no phone/mobile networks, and the IMEI & Baseband show as "Unknown". I do have Wifi. I've seen some similar issues on the forums but nothing exact - tried flashing the MJB modem (flashed fine, but no change), and tried flashing the MJB modem & bootloader (get "assert failed" followed by several getprop commands). After a couple of days chasing this, thought I should ask rather than keep stumbling & possibly making things worse. Anyone have any advice?
I was rooted but otherwise stock when I tried to do the OTA update.
I'm using TWRP 2.6.3.1 to flash, ODIN 3.07, and the files I flashed were (from links found in this forum):
4.3: I747UCUEMJB_2024954_REV04_user_low_ship.tar.md5
MJB modem: d2att_I747UCUEMJB_modem.zip
MJB modem & bootloader: d2att_I747UCUEMJB_modem.zip
Any help greatly appreciated.
Try flashing a 4.4.2 touchwiz rom and factory resetting.
DO NOT try to flash the 4.3 bootloader or firmware! You are lucky it didn't flash or you'd now be hard bricked! The MJB modem may not work on the NE4 firmware, so make sure you have that modem.
DocHoliday77 said:
Try flashing a 4.4.2 touchwiz rom and factory resetting.
DO NOT try to flash the 4.3 bootloader or firmware! You are lucky it didn't flash or you'd now be hard bricked! The MJB modem may not work on the NE4 firmware, so make sure you have that modem.
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Thanks for the advice! So would you recommend flashing 4.4.2 first, and then an NE4 modem if I don't have it, or reverse that order?
Gaussfan said:
Thanks for the advice! So would you recommend flashing 4.4.2 first, and then an NE4 modem if I don't have it, or reverse that order?
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OK, I went ahead and flashed 4.4.2 and I'm back up & running - thank you!
Gaussfan said:
OK, I went ahead and flashed 4.4.2 and I'm back up & running - thank you!
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Click to collapse
which ROM and files did you flash? in what order? I'm in the same boat. It works in 4.3 with "Baseband Unknown". However, If I try to update to 4.4.2 , the phone will freeze after "Samsung" logo.
What firmware are you on?
Install terminal emulator and enter this:
getprop ro.bootloader
If it returns NE4, that's the modem you need. If it returns MJB or MJ2, do not flash the NE4 modem or it'll hard brick. Basically, you should use whatever modem matches the firmware/bootloader version you currently are running.
DocHoliday77 said:
What firmware are you on?
Install terminal emulator and enter this:
getprop ro.bootloader
If it returns NE4, that's the modem you need. If it returns MJB or MJ2, do not flash the NE4 modem or it'll hard brick. Basically, you should use whatever modem matches the firmware/bootloader version you currently are running.
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Click to collapse
Was at stock 4.3 . Received OTA update and froze in the middle of updating.
I used this to get back to stock 4.3 I747UCUEMJB_2024954_REV04_user_low_ship.tar.md5
Everything works , but Baseband Unknown. If flashed NE4 modem, Baseband is back and phone working again, but can't turn on Wifi.
[email protected]:/ # getprop ro.bootloader
getprop ro.bootloader
I747UCUFNE4
- install TWRP and flashed 4.4.2 stock zip -> freeze after Samsung logo after reboot
- restored to stock 4.3 again, install TWRP and flashed 4.4.2 OTA zip -> freeze after Samsung logo after reboot
- restored to stock 4.3 again, used stock recovery and flashed 4.4.2 OTA zip -> freeze after Samsung logo after reboot
Ok, this is what happens with wifi....
4.3 firmware with 4.4.2 rom = no wifi
4.4.2 firmware with a 4.3 rom = no wifi
In both cases you need a custom kernel. Since you are updated to 4.4.2 firmware, if you want to use a 4.3 rom, you will have to flash either the MJ2 or kt747 kernel for wifi to work. The NE4 modem is the only modem you can use now.
Your boot hangs will be solved by factory resetting. I doubt there's any way around this at this point.
I suggest flashing the NE4 stock rom from enewman17. Then factory reset. It should reboot and work fine now.
---------- Post added at 02:44 AM ---------- Previous post was at 02:42 AM ----------
Oh, and do not try to use the ota again.
DocHoliday77 said:
Ok, this is what happens with wifi....
4.3 firmware with 4.4.2 rom = no wifi
4.4.2 firmware with a 4.3 rom = no wifi
In both cases you need a custom kernel. Since you are updated to 4.4.2 firmware, if you want to use a 4.3 rom, you will have to flash either the MJ2 or kt747 kernel for wifi to work. The NE4 modem is the only modem you can use now.
Your boot hangs will be solved by factory resetting. I doubt there's any way around this at this point.
I suggest flashing the NE4 stock rom from enewman17. Then factory reset. It should reboot and work fine now.
---------- Post added at 02:44 AM ---------- Previous post was at 02:42 AM ----------
Oh, and do not try to use the ota again.
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Click to collapse
Thx for the tips. Will try soon.
However, once the phone froze after Samsung logo, I could not access custom recovery anymore. In the case of stock recovery, I could get back to it but there were no point. Phone still froze after Wipe.
Try refreshing your recovery with Odin. Try rebooting recovery again. Then try to factory reset before flashing the rom, and again afterwards.
Good luck and let me know how it goes!
DocHoliday77 said:
Try refreshing your recovery with Odin. Try rebooting recovery again. Then try to factory reset before flashing the rom, and again afterwards.
Good luck and let me know how it goes!
Click to expand...
Click to collapse
After 5 hours working on this phone, I think I'm happy which what I have now.
1- Restored back to stock 4.3
2- Flash custom recovery
3- Flash NE4 modem
4- Flash ktoonsez kernel Touchwiz JELLYBEAN 4.3 VERSIONS
Everything is working now. I will not update this to 4.4.2 b/c no matter which ways I used to go to 4.4.2 either through custom or stock recovery, phone would freeze after Samsung logo ( already did factory reset before and after flashing ROM/update)
Thx for your help.
Hi.
I'm really out of the loop for flashing to the latest rom. I'm still on 4.3 Darthstalker Version X1. I want to upgrade to the latest 4.4.4. I've try flashing a few roms but I couldn't get the wifi to turn on so I want to know what I'm doing wrong.
I've flashed the NH7 modem.bin from Shinnyside's thread. I didn't flash the non-HLOS file because after flashing just the modem.bin file I can see the NH4 modem is sticking and everything still work on 4.3. I then flashed a few different rom but I couldn't get the wifi to turn on. Is it that I'm getting this problem is because I didn't flash the non-HLOS modem? If I flash the non-NLOS file, will it solve the wifi problem I'm having?
I also read some post that I need to update to the NH7 bootloader (i'm still on the mk2 bootloader) for some 4.4.4 feature to work. How do I do that?
Thanks in advance for your help.
Either try a different kernel or update to NH7 firmware, then flash ROM
Hi serio22,
What kernal can I try? How to I update to the NH7 firmware? Thx.
Look in here.
http://forum.xda-developers.com/showthread.php?p=54155517
Pp.
sent from my microwave running lollipop 5.0.
daihung1 said:
Hi serio22,
What kernal can I try?.
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Click to collapse
Any custom kernel like ktoonsez or alucard for example.. Also make sure you update your modem if you don't want to update to the latest firmware
I want to downgrade from lolipop to kk but i dont have kitkat backup because my sdcard has broken. And i want to ask if you flash kdz do you get modem or if you can just flash modem after kitkat rom.
foxxx46 said:
I want to downgrade from lolipop to kk but i dont have kitkat backup because my sdcard has broken. And i want to ask if you flash kdz do you get modem or if you can just flash modem after kitkat rom.
Click to expand...
Click to collapse
If you flash the whole kdz the modem will be installed as well :good:
Pfeffernuss said:
If you flash the whole kdz the umodem will be installed as well :good:
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Click to collapse
Thank you
How do I downgrade JUST the modem back? I'm on 12b and I think that modem is giving me issues as far as texting goes. Thanks
I've got the sickness v11 (4.4.2) Tw rom installed, but I haven't been around a computer lately to update the other things through Odin. Should I just Odin flash the stock 4.4.2? Will that give me what I need, so when I flash my sickness rom again, I'll have the right modem n things?
I'm trying to hurry cuz I only have so much time around this comp
SaintCity86 said:
I've got the sickness v11 (4.4.2) Tw rom installed, but I haven't been around a computer lately to update the other things through Odin. Should I just Odin flash the stock 4.4.2? Will that give me what I need, so when I flash my sickness rom again, I'll have the right modem n things?
I'm trying to hurry cuz I only have so much time around this comp
Click to expand...
Click to collapse
Best thing it flash stock but be sure its the correct package or you can install a custom recovery snd install stock os or just flash a new kernel
What modem do I need for 4.4.2 rom
SaintCity86 said:
What modem do I need for 4.4.2 rom
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Click to collapse
Look at your basband if its mh7 upgrade odms to NK2/if below nh7 the upgrade it but youll need to fmash the full stock od v4.4.4 NH7 to update your modem
Hey, I have few questions and a request.
first of all is it possible to flash modem after flashing the rom(I currently have a working kitkat 4.4.2 TWN v10b- stock rom) but I don't have signal - that's because I have messed up things before that and installed a rom for hongkong d858 phone , now hardly I could flash back to my stock rom but i still have no signal .. so that's modem related i suppose .
If anyone could give me a link to where i can download kitkat modem for my phone and how do I flash it .. please
*** it is preferred if i can flash it without root ***
well i flashed the modem using twrp zip flash but still no signal any ideas?