SM-G550T SPL 2017 03 01 unlock failed - GSM-Forum

chmsc_ELX · 10-09-2017, 07:35

logs
Platform: Samsung Android
Selected port: COM22
Selected model: SM-G550T
Detected phone model: SM-G550T
Firmware compiled date: Thu Mar 23 17:45:19 KST 2017
PDA version: G550TUVU2AQC4
CSC version: G550TTMB2AQC4
SW version: G550TUVU2AQC4
Phone SN: RV8HA0D886Y
Android version: 6.0.1 (MMB29K)
Sales code: TMB
Country: USA
HW platform: exynos3
HW Chip: exynos3475
HW Modem: SHANNON308
Security patch level: 2017-03-01
SIM 1 status: absent
Codename: on5ltetmo
Checking Root:
Phone is Rooted.
Reading security backup, please wait...
Backup saved as C:\Program Files (x86)\Octoplus\Octoplus_Samsung\BACKUP\Security-SM-G550T-Unknown09-10-2017_14-25-55-.asec file
Connecting to modem port...
Found phone on COM11
Reading data from phone...
Could not read data from modem port, trying with exploit..
Initializing exploit...
Executing exploit...
Executing exploit failed
Phone unlocking failed
Performed by 2.6.0 Software version.

i do downgrade the modem by flash cp but result is baseband unknown

i tried flash in fw PF1 result is not good... phone is brick, but tnx to smart switch i recover the phone again, and also recover in baseband unknown problem by rewriting the certificate backup.

but the problem is still the same phone unlock failed

chmsc_ELX · 10-09-2017, 07:50

logx
https://www.4shared.com/file/rcLv5ki..._12-57-05.html

Octopus box · 10-09-2017, 07:56

Hello.

In the latest firmware versions Samsung close security hole and You can't perform Direct Unlock or Write Cert on new version of firmwares. You can try to downgrade phone's firmware (write older, by release date, version of firmware) but on your own risk, after repeat Unlock or Write Cert operations.

chmsc_ELX · 10-09-2017, 11:51

Quote:

Originally Posted by Octopus box

Hello.

In the latest firmware versions Samsung close security hole and You can't perform Direct Unlock or Write Cert on new version of firmwares. You can try to downgrade phone's firmware (write older, by release date, version of firmware) but on your own risk, after repeat Unlock or Write Cert operations.

the problem cant flash the phone successfully... the result is a brick phone, it will loop on the screen with a word an error occur used SMART SWITCH for firmware Emergency Recovery Upgrade. and luckily after flash on 2k16 Build fw knox trigger.

someone can answer here if what is the compatible firmware that can downgrade this QC4 build?

chmsc_ELX · 10-09-2017, 11:55

this is like a suicide :v i recover the phone from brick and return its HW MODEM that has damage during Baseband upgrade. but still no solution for unlock at this moment.

Octopus box · 10-09-2017, 12:28

We are working on new solutions, stay tuned for future updates.

10-09-2017, 07:35	#1 (permalink)
chmsc_ELX No Life Poster Join Date: Mar 2012 Location: gsm world Posts: 887 Member: 1741973 Status: Offline Thanks Meter: 115	SM-G550T SPL 2017 03 01 unlock failed logs Platform: Samsung Android Selected port: COM22 Selected model: SM-G550T Detected phone model: SM-G550T Firmware compiled date: Thu Mar 23 17:45:19 KST 2017 PDA version: G550TUVU2AQC4 CSC version: G550TTMB2AQC4 SW version: G550TUVU2AQC4 Phone SN: RV8HA0D886Y Android version: 6.0.1 (MMB29K) Sales code: TMB Country: USA HW platform: exynos3 HW Chip: exynos3475 HW Modem: SHANNON308 Security patch level: 2017-03-01 SIM 1 status: absent Codename: on5ltetmo Checking Root: Phone is Rooted. Reading security backup, please wait... Backup saved as C:\Program Files (x86)\Octoplus\Octoplus_Samsung\BACKUP\Security-SM-G550T-Unknown09-10-2017_14-25-55-.asec file Connecting to modem port... Found phone on COM11 Reading data from phone... Could not read data from modem port, trying with exploit.. Initializing exploit... Executing exploit... Executing exploit failed Phone unlocking failed Performed by 2.6.0 Software version. i do downgrade the modem by flash cp but result is baseband unknown i tried flash in fw PF1 result is not good... phone is brick, but tnx to smart switch i recover the phone again, and also recover in baseband unknown problem by rewriting the certificate backup. but the problem is still the same phone unlock failed

10-09-2017, 07:50	#2 (permalink)
chmsc_ELX No Life Poster Join Date: Mar 2012 Location: gsm world Posts: 887 Member: 1741973 Status: Offline Thanks Meter: 115	logx https://www.4shared.com/file/rcLv5ki..._12-57-05.html

10-09-2017, 07:56	#3 (permalink)
Octopus box Product Supporter Join Date: Oct 2009 Location: Romania, Bucharest Posts: 99,847 Member: 1146942 Status: Offline Sonork: 100.1587278 Thanks Meter: 27,413	Hello. In the latest firmware versions Samsung close security hole and You can't perform Direct Unlock or Write Cert on new version of firmwares. You can try to downgrade phone's firmware (write older, by release date, version of firmware) but on your own risk, after repeat Unlock or Write Cert operations.

10-09-2017, 11:55	#5 (permalink)
chmsc_ELX No Life Poster Join Date: Mar 2012 Location: gsm world Posts: 887 Member: 1741973 Status: Offline Thanks Meter: 115	this is like a suicide :v i recover the phone from brick and return its HW MODEM that has damage during Baseband upgrade. but still no solution for unlock at this moment.

10-09-2017, 12:28	#6 (permalink)
Octopus box Product Supporter Join Date: Oct 2009 Location: Romania, Bucharest Posts: 99,847 Member: 1146942 Status: Offline Sonork: 100.1587278 Thanks Meter: 27,413	We are working on new solutions, stay tuned for future updates.