Sm-j120zn - samsung j1 2016 - z3x box error after samsung tool pro 28.1 update. - GSM-Forum

moizmansur · 04-28-2017, 08:19

Hi Team,
We were able to unlock SM-J120ZN successfully but after the new update to Samsung tool pro it comes with error saying " downgrade the modem". We tried uninstalling the new version and installed the old version and it is still giving the same error.
Can some one please help asap.
Kind Regards,
MZ

moizmansur · 05-02-2017, 11:50

Operation: Unlock
Selected model: SM-J120ZN
Software version: 28.1

Searching Samsung modem... detected COM77
Reading phone info... Ok
Model: SM-J120ZN
AP version: J120ZNDVU1AQB2
CSC version: J120ZNTLP1AQB1
CP version: J120ZNDVU1AQB1
Product code: SM-J120ZZKNTLP
Phone SN: R58J40P17QW
Unique number: CFN0030C94EB424
Reading IMEI... Ok
IMEI: 359751070850404 (SIGN: OK)
Reading data from phone... error (0)
Try downgrade modem if possible

Done with Samsung Tool PRO v.28.1

Can we please get some help here asap. Thanks

mk · 05-02-2017, 13:56

Try downgrade modem
or use "Unlock new" with root

masoudsoftwrae · 05-02-2017, 15:51

Quote:

Originally Posted by mk

Try downgrade modem
or use "Unlock new" with root

Unlock New Not work on 1/3/2017
but downgrad modem work Good

moizmansur · 05-04-2017, 03:27

Hi Mk & Masoud,

Thanks for your kind reply. Can you please advise how to downgrade modem ? Your prompt response would be much appreciated.

Kind Regards,
Moiz.

masoudsoftwrae · 05-04-2017, 05:19

its very simple

J120ZNDVU1AQB1
this firmware is released in 07.03.2017

you need to find old date firmwre But In some Security (XXU1/DVU1) this is security nomber

J120ZNDVU1APC7
Look this is also U1 but its relesed in 22.04.2016
this is Downgrade Story

you cant flash XXU1 to XXU2 its make baseband unknown

moizmansur · 05-04-2017, 11:12

Many thanks bro. I will try this today and keep it posted. Many thanks for your kind help.

nathan111284 · 08-28-2017, 10:47

need root file for this

04-28-2017, 08:19	#1 (permalink)
moizmansur Junior Member Join Date: Apr 2017 Posts: 6 Member: 2709281 Status: Offline Thanks Meter: 0	Sm-j120zn - samsung j1 2016 - z3x box error after samsung tool pro 28.1 update. Hi Team, We were able to unlock SM-J120ZN successfully but after the new update to Samsung tool pro it comes with error saying " downgrade the modem". We tried uninstalling the new version and installed the old version and it is still giving the same error. Can some one please help asap. Kind Regards, MZ

05-02-2017, 11:50	#2 (permalink)
moizmansur Junior Member Join Date: Apr 2017 Posts: 6 Member: 2709281 Status: Offline Thanks Meter: 0	Operation: Unlock Selected model: SM-J120ZN Software version: 28.1 Searching Samsung modem... detected COM77 Reading phone info... Ok Model: SM-J120ZN AP version: J120ZNDVU1AQB2 CSC version: J120ZNTLP1AQB1 CP version: J120ZNDVU1AQB1 Product code: SM-J120ZZKNTLP Phone SN: R58J40P17QW Unique number: CFN0030C94EB424 Reading IMEI... Ok IMEI: 359751070850404 (SIGN: OK) Reading data from phone... error (0) Try downgrade modem if possible Done with Samsung Tool PRO v.28.1 Can we please get some help here asap. Thanks

05-02-2017, 13:56	#3 (permalink)
mk Product Manager Join Date: Nov 2005 Location: WWW Posts: 500 Member: 199768 Status: Offline Thanks Meter: 16,170	Try downgrade modem or use "Unlock new" with root

05-04-2017, 03:27	#5 (permalink)
moizmansur Junior Member Join Date: Apr 2017 Posts: 6 Member: 2709281 Status: Offline Thanks Meter: 0	Hi Mk & Masoud, Thanks for your kind reply. Can you please advise how to downgrade modem ? Your prompt response would be much appreciated. Kind Regards, Moiz.

05-04-2017, 05:19	#6 (permalink)
masoudsoftwrae Freak Poster Join Date: Jan 2016 Location: Afghanistan Posts: 388 Member: 2520139 Status: Offline Sonork: masoudsoftware Thanks Meter: 300	its very simple J120ZNDVU1AQB1 this firmware is released in 07.03.2017 you need to find old date firmwre But In some Security (XXU1/DVU1) this is security nomber J120ZNDVU1APC7 Look this is also U1 but its relesed in 22.04.2016 this is Downgrade Story you cant flash XXU1 to XXU2 its make baseband unknown

05-04-2017, 11:12	#7 (permalink)
moizmansur Junior Member Join Date: Apr 2017 Posts: 6 Member: 2709281 Status: Offline Thanks Meter: 0	Many thanks bro. I will try this today and keep it posted. Many thanks for your kind help.

08-28-2017, 10:47	#8 (permalink)
nathan111284 Freak Poster Join Date: Aug 2010 Location: Inside NCK Dongle Posts: 432 Member: 1370010 Status: Offline Thanks Meter: 57	need root file for this