Anyone have issue with Samsung G550T On5 after unlock? - GSM-Forum

truwrxtacy · 10-11-2016, 18:15

I did 3 unlocks on the Samsung G550T, unlock went fine and everything worked. But customer come back a week later with the phone not booting up, they said the phone was running slow, then they try to reboot the phone, turned it off and turned it back on and then it wont turn on anymore (when they try to turn it on, it goes to a black screen that says custom binary blocked by FRP), it goes into download mode but i cant load S/W in because of FRP lock.

This is with 3 separate customers, has anyone else ran into this issue? now i have 3 dead G550T

ecuador91 · 10-11-2016, 19:47

You need to flash stock firmware.

truwrxtacy · 10-11-2016, 19:48

i cant, its blocked by FRP

george241312 · 10-11-2016, 19:49

Quote:

Originally Posted by truwrxtacy

I did 3 unlocks on the Samsung G550T, unlock went fine and everything worked. But customer come back a week later with the phone not booting up, they said the phone was running slow, then they try to reboot the phone, turned it off and turned it back on and then it wont turn on anymore (when they try to turn it on, it goes to a black screen that says custom binary blocked by FRP), it goes into download mode but i cant load S/W in because of FRP lock.

This is with 3 separate customers, has anyone else ran into this issue? now i have 3 dead G550T

1. Flash phone to stock firmware it will go through because its signed firmware.
2. Enable Developer Options and Turn on OEM Unlock.
3. Research a little bit more before you start playing with peoples phones.

truwrxtacy · 10-11-2016, 19:56

Quote:

Originally Posted by george241312

1. Flash phone to stock firmware it will go through because its signed firmware.
2. Enable Developer Options and Turn on OEM Unlock.
3. Research a little bit more before you start playing with peoples phones.

thats quite an assumption you made. you dont know anything about me

1) like i said, i cannot flash a stock firmware on it, thru odin it gives an error, thru side sync it force closes itself

2) you cannot enable deveoper option and OEM unlock if it has a FRP on it, especially if i cannot get a stock firmware on it, assuming i do put the stock firmware on it, theres still a chance that i'm locked out with the FRP.

3) you dont know me, so dont assume i'm just "playing with peoples phones"

ecuador91 · 10-11-2016, 21:23

the reason you are failing is because you are using an old firmware find the newest firmware and flash through odin. very simple bro.

Eerchant · 10-12-2016, 02:00

Quote:

Originally Posted by truwrxtacy

I did 3 unlocks on the Samsung G550T, unlock went fine and everything worked. But customer come back a week later with the phone not booting up, they said the phone was running slow, then they try to reboot the phone, turned it off and turned it back on and then it wont turn on anymore (when they try to turn it on, it goes to a black screen that says custom binary blocked by FRP), it goes into download mode but i cant load S/W in because of FRP lock.

This is with 3 separate customers, has anyone else ran into this issue? now i have 3 dead G550T

Flash using this stock firmware:

SM-G550T_UVU1APF1_TMB1APF1_fac.zip

jasong197 · 10-14-2016, 16:34

Well, I am assuming you rooted the phones to unlock them. After servicing a phone you should ALWAYS flash back stock firmware. Only takes max five minutes and prevents any future headaches. Those errors come up when a phone has a custom kernel and/or recovery.

Alexandroid · 10-15-2016, 14:01

Quote:

Originally Posted by jasong197

Well, I am assuming you rooted the phones to unlock them. After servicing a phone you should ALWAYS flash back stock firmware. Only takes max five minutes and prevents any future headaches. Those errors come up when a phone has a custom kernel and/or recovery.

Yes that is right. To prevent unlock problems and knox o FRP problems is necesary after unlock return the phone to Oficial status and that is all.
I did one before, after that reflash and is working fine without problems.

10-11-2016, 18:15	#1 (permalink)
truwrxtacy No Life Poster Join Date: May 2014 Posts: 522 Member: 2188956 Status: Offline Thanks Meter: 29	Anyone have issue with Samsung G550T On5 after unlock? I did 3 unlocks on the Samsung G550T, unlock went fine and everything worked. But customer come back a week later with the phone not booting up, they said the phone was running slow, then they try to reboot the phone, turned it off and turned it back on and then it wont turn on anymore (when they try to turn it on, it goes to a black screen that says custom binary blocked by FRP), it goes into download mode but i cant load S/W in because of FRP lock. This is with 3 separate customers, has anyone else ran into this issue? now i have 3 dead G550T

10-11-2016, 19:47	#2 (permalink)
ecuador91 Crazy Poster Join Date: Nov 2015 Location: USA Chicago Posts: 57 Member: 2485239 Status: Offline Thanks Meter: 11	You need to flash stock firmware.

10-11-2016, 19:48	#3 (permalink)
truwrxtacy No Life Poster Join Date: May 2014 Posts: 522 Member: 2188956 Status: Offline Thanks Meter: 29	i cant, its blocked by FRP

10-11-2016, 21:23	#6 (permalink)
ecuador91 Crazy Poster Join Date: Nov 2015 Location: USA Chicago Posts: 57 Member: 2485239 Status: Offline Thanks Meter: 11	the reason you are failing is because you are using an old firmware find the newest firmware and flash through odin. very simple bro.

10-14-2016, 16:34	#8 (permalink)
jasong197 Crazy Poster Join Date: Mar 2015 Posts: 53 Member: 2363382 Status: Offline Thanks Meter: 13	Well, I am assuming you rooted the phones to unlock them. After servicing a phone you should ALWAYS flash back stock firmware. Only takes max five minutes and prevents any future headaches. Those errors come up when a phone has a custom kernel and/or recovery.