Galaxy S5 SM-G900A Lollipop 5.0 IMEI Repair? - GSM-Forum

hyratech · 04-17-2015, 21:29

Hello,

I got a Galaxy S5 G900A USA AT&T model. running 5.0.
COM Ports disabled, cannot downgrade. any solution on writing certs?

tried to downgrade and it got soft-bricked. I was able to recover it back to 5.0 OC4 Version..

iowahawk · 04-17-2015, 22:23

Did you try to do factory reset via recovery mode (including wiping cache) after you downgraded?

hyratech · 04-17-2015, 22:58

unable to downgrade... it will fail and get soft-bricked,.

Octopus box · 04-18-2015, 07:13

Unfortunately, currently no solution without downgrading phone's firmware to lower Android version. We work on this.

iowahawk · 04-18-2015, 09:08

There is no need to downgrade it if you can obtain root on lollipop. Will it allow you to downgrade just the kernel to nd3 so you can use towel root to root it?

iowahawk · 04-18-2015, 09:19

Flash the nd3 kernel below to the phone via pda/ap tab in odin. See if it will stick if not just flash the lollipop rom back. If it does stick let me know and I will tell you how to fix imei without having to downgrade.

http://16005b5c80abd029d678-e001c05e...Kernel.tar.md5

hyratech · 04-18-2015, 14:10

Quote:

Originally Posted by iowahawk

Flash the nd3 kernel below to the phone via pda/ap tab in odin. See if it will stick if not just flash the lollipop rom back. If it does stick let me know and I will tell you how to fix imei without having to downgrade.

http://16005b5c80abd029d678-e001c05e...Kernel.tar.md5

I can't find a Odin file of lollipop for G900A. In case if it messed up, I won't be able to flash the kernel back.
I was able to find the Upgrade file for the lollipop but require me to flash another file first. Found some instructions on xda.

Our problem seems to be NO DM COM PORT.. Not root.. Assume we can root it, how do we fix IMEI without the com ports enabled?

hulksjeep · 04-18-2015, 17:06

Quote:

Originally Posted by hyratech

I can't find a Odin file of lollipop for G900A. In case if it messed up, I won't be able to flash the kernel back.
I was able to find the Upgrade file for the lollipop but require me to flash another file first. Found some instructions on xda.

Our problem seems to be NO DM COM PORT.. Not root.. Assume we can root it, how do we fix IMEI without the com ports enabled?

it would hook up to the UART cable on the box if OB detects it, I tried it with a note 3 and it didn't work, you can try your luck though

Maurioski · 04-18-2015, 17:45

i thing the best way to IMEI repair is UART Metod, bt, Octopus Team, idk why don't use that way.

hyratech · 04-19-2015, 00:21

how do we wipe efs then? Are we able to wipe using uart? Or if there is a hidden menu to wipe the efs?

iowahawk · 04-20-2015, 04:35

I am not sure if the hidden service menu is available on at&t s5 on lollipop. Even if it was you would still have an issue. If you cant root the phone you will not be able to write the qcn back to phone and you will have new imei but no signal.

hyratech · 04-20-2015, 04:41

I'm seeing about 10-20 % of the phones i'm repairng requiring qcn to fix the network. most works fine.. even LTE.. and about 50% of them, I will get 4G, and will require a qcn to fix the LTE.. for example the ATT Note 4, without QCN, i will get 4G, qcn will fix it to LTE.

i also saw a post on the z3x forum,. they say to enable the com ports, you all you need to do it go to recovery mode, select enable cp logging.. that will enable the com ports,, I do not have a samsung with 5.0 installed now.. can someone with a samsung s5 or similair with firmware 5.0 installed confirm this?

hyratech · 04-20-2015, 04:44

Quote:

Originally Posted by iowahawk

I am not sure if the hidden service menu is available on at&t s5 on lollipop. Even if it was you would still have an issue. If you cant root the phone you will not be able to write the qcn back to phone and you will have new imei but no signal.

Correct me if I'm wrong.. i don't think root is required to write the qcn.

iowahawk · 04-20-2015, 04:53

Yeah, you are correct. Was thinking of something else. If you can wipe the efs without root you will be able to write the cert via UART and qcn via usb. There are other tools that will allow you to wipe the s5 efs via download mode. So once you wipe efs via download just write cert via UART and write qcn back using USB. No need to downgrade then.

hyratech · 04-20-2015, 05:11

Quote:

Originally Posted by iowahawk

Yeah, you are correct. Was thinking of something else. If you can wipe the efs without root you will be able to write the cert via UART and qcn via usb. There are other tools that will allow you to wipe the s5 efs via download mode. So once you wipe efs via download just write cert via UART and write qcn back using USB. No need to downgrade then.

i had been searching a way to wipe efs using altenative ways other than root and wipe efs with the OP box. because of certain root method, sometime it does not wipe in the first 75 times! i have seem others putting the phone in download mode and flash a file, then poof, imei is gone. i search the forum for this. I see people mentioning this, but no files or confirmations....

you got any ideas?

04-17-2015, 21:29	#1 (permalink)
hyratech Freak Poster Join Date: Aug 2009 Location: NYC Posts: 353 Member: 1105429 Status: Offline Thanks Meter: 118	Galaxy S5 SM-G900A Lollipop 5.0 IMEI Repair? Hello, I got a Galaxy S5 G900A USA AT&T model. running 5.0. COM Ports disabled, cannot downgrade. any solution on writing certs? tried to downgrade and it got soft-bricked. I was able to recover it back to 5.0 OC4 Version.. Last edited by Octopus box; 04-18-2015 at 07:14.

04-18-2015, 09:08	#5 (permalink)
iowahawk Banned Join Date: Mar 2015 Posts: 66 Member: 2371548 Status: Offline Thanks Meter: 27	There is no need to downgrade it if you can obtain root on lollipop. Will it allow you to downgrade just the kernel to nd3 so you can use towel root to root it? Last edited by iowahawk; 04-18-2015 at 09:14.

04-17-2015, 22:23	#2 (permalink)
iowahawk Banned Join Date: Mar 2015 Posts: 66 Member: 2371548 Status: Offline Thanks Meter: 27	Did you try to do factory reset via recovery mode (including wiping cache) after you downgraded?

04-17-2015, 22:58	#3 (permalink)
hyratech Freak Poster Join Date: Aug 2009 Location: NYC Posts: 353 Member: 1105429 Status: Offline Thanks Meter: 118	unable to downgrade... it will fail and get soft-bricked,.

04-18-2015, 07:13	#4 (permalink)
Octopus box Product Supporter Join Date: Oct 2009 Location: Romania, Bucharest Posts: 99,850 Member: 1146942 Status: Offline Sonork: 100.1587278 Thanks Meter: 27,413	Unfortunately, currently no solution without downgrading phone's firmware to lower Android version. We work on this.

04-18-2015, 09:19	#6 (permalink)
iowahawk Banned Join Date: Mar 2015 Posts: 66 Member: 2371548 Status: Offline Thanks Meter: 27	Flash the nd3 kernel below to the phone via pda/ap tab in odin. See if it will stick if not just flash the lollipop rom back. If it does stick let me know and I will tell you how to fix imei without having to downgrade. http://16005b5c80abd029d678-e001c05e...Kernel.tar.md5

04-18-2015, 17:45	#9 (permalink)
Maurioski No Life Poster Join Date: Mar 2013 Posts: 659 Member: 1900730 Status: Offline Thanks Meter: 188	i thing the best way to IMEI repair is UART Metod, bt, Octopus Team, idk why don't use that way.

04-19-2015, 00:21	#10 (permalink)
hyratech Freak Poster Join Date: Aug 2009 Location: NYC Posts: 353 Member: 1105429 Status: Offline Thanks Meter: 118	how do we wipe efs then? Are we able to wipe using uart? Or if there is a hidden menu to wipe the efs?

04-20-2015, 04:35	#11 (permalink)
iowahawk Banned Join Date: Mar 2015 Posts: 66 Member: 2371548 Status: Offline Thanks Meter: 27	I am not sure if the hidden service menu is available on at&t s5 on lollipop. Even if it was you would still have an issue. If you cant root the phone you will not be able to write the qcn back to phone and you will have new imei but no signal.

04-20-2015, 04:41	#12 (permalink)
hyratech Freak Poster Join Date: Aug 2009 Location: NYC Posts: 353 Member: 1105429 Status: Offline Thanks Meter: 118	I'm seeing about 10-20 % of the phones i'm repairng requiring qcn to fix the network. most works fine.. even LTE.. and about 50% of them, I will get 4G, and will require a qcn to fix the LTE.. for example the ATT Note 4, without QCN, i will get 4G, qcn will fix it to LTE. i also saw a post on the z3x forum,. they say to enable the com ports, you all you need to do it go to recovery mode, select enable cp logging.. that will enable the com ports,, I do not have a samsung with 5.0 installed now.. can someone with a samsung s5 or similair with firmware 5.0 installed confirm this?

04-20-2015, 04:53	#14 (permalink)
iowahawk Banned Join Date: Mar 2015 Posts: 66 Member: 2371548 Status: Offline Thanks Meter: 27	Yeah, you are correct. Was thinking of something else. If you can wipe the efs without root you will be able to write the cert via UART and qcn via usb. There are other tools that will allow you to wipe the s5 efs via download mode. So once you wipe efs via download just write cert via UART and write qcn back using USB. No need to downgrade then.