N900a - No LTE sometimes Unkown Basebad and IMEI Null - GSM-Forum

whitewidows · 04-23-2015, 21:06

In the last week Ive had a lot of issues with my AT&T Note 3 running Lollipop i am using it on Straight Talk but ATT sims have the same issue. As of right now after a fresh odin flash of Lollipop my phone is showing a base band and IMEI, network type LTE, Mobile network type is Disconnected.

Reboots a cell connection may take up to 10 min if it even connects at all. If will show unknown base band, no imei. Do data no cell connection. AT&T Device center said it was the sim tray but I dont believe that is the issue. Maybe a corrupted EFS partition. Has anyone had this issue and if so know of a way to repair it?

Not Rooted

hyratech · 04-23-2015, 21:47

Did you wipe EFS before? if you did, restore the security backup.

whitewidows · 04-23-2015, 21:52

Quote:

Originally Posted by hyratech

Did you wipe EFS before? if you did, restore the security backup.

Not while I have had it. I got it from a Samsung rep for free (I work at a att reseller)

Also on a side note it is sometimes displaying the Unlocked icon but not all the time :/

Octopus box · 04-24-2015, 06:18

Hello.

At the first, try to make Factory data reset, wipe cache partiion and reflash the phone.

whitewidows · 04-24-2015, 06:39

Quote:

Originally Posted by Octopus box

Hello.

At the first, try to make Factory data reset, wipe cache partition and reflash the phone.

First off I want to apologize that I didnt realize this was a sub-forum was for your software/hardware for fixing imei's. I have not altered anything in the efs partition.

I have tried several stock odin tars with pit files and every boot results in no baseband. I haven't had it come back since downgrading from lollipop.

I downgraded and used efs pro to back up and restore the efs with no success, well the first attempts brought a cell connection back but no data, then died after reboot.

At this point im leaning to a hw issue with emmc. ***** as I dont think it will be reasonable to get repaired.

If you can think of anything else I can do im all ears. Thanks

hyratech · 04-25-2015, 19:09

You said downgraded from lollipop? Att phones cannot downgrade... I suggest you reload with the latest lollipop firmware and check again..

whitewidows · 04-25-2015, 19:13

Quote:

Originally Posted by hyratech

You said downgraded from lollipop? Att phones cannot downgrade... I suggest you reload with the latest lollipop firmware and check again..

You can downgrade ATT Note 3 from Lollipop via ODIN. Its the only way to achieve root.

vinslyj · 04-25-2015, 20:12

You cant try doing a repair efs operation. I had an s5 sm-g900t and that is how i fixed it. Try that if all fails.

04-23-2015, 21:06	#1 (permalink)
whitewidows Junior Member Join Date: Apr 2015 Posts: 5 Member: 2383802 Status: Offline Thanks Meter: 0	N900a - No LTE sometimes Unkown Basebad and IMEI Null In the last week Ive had a lot of issues with my AT&T Note 3 running Lollipop i am using it on Straight Talk but ATT sims have the same issue. As of right now after a fresh odin flash of Lollipop my phone is showing a base band and IMEI, network type LTE, Mobile network type is Disconnected. Reboots a cell connection may take up to 10 min if it even connects at all. If will show unknown base band, no imei. Do data no cell connection. AT&T Device center said it was the sim tray but I dont believe that is the issue. Maybe a corrupted EFS partition. Has anyone had this issue and if so know of a way to repair it? Not Rooted

04-23-2015, 21:47	#2 (permalink)
hyratech Freak Poster Join Date: Aug 2009 Location: NYC Posts: 353 Member: 1105429 Status: Offline Thanks Meter: 118	Did you wipe EFS before? if you did, restore the security backup.

04-24-2015, 06:18	#4 (permalink)
Octopus box Product Supporter Join Date: Oct 2009 Location: Romania, Bucharest Posts: 99,907 Member: 1146942 Status: Offline Sonork: 100.1587278 Thanks Meter: 27,420	Hello. At the first, try to make Factory data reset, wipe cache partiion and reflash the phone.

04-25-2015, 19:09	#6 (permalink)
hyratech Freak Poster Join Date: Aug 2009 Location: NYC Posts: 353 Member: 1105429 Status: Offline Thanks Meter: 118	You said downgraded from lollipop? Att phones cannot downgrade... I suggest you reload with the latest lollipop firmware and check again..

04-25-2015, 20:12	#8 (permalink)
vinslyj Freak Poster Join Date: May 2013 Location: Haiti Posts: 357 Member: 1940476 Status: Offline Thanks Meter: 27	You cant try doing a repair efs operation. I had an s5 sm-g900t and that is how i fixed it. Try that if all fails.