WP8 NVI files - are they really flashed to phone? - GSM-Forum

german gsm team · 10-08-2014, 10:28

See topic.

Are these files really flashed to phone after or before FFU with common flashing tools?

They contain modem settings and aren't signed.

Or are they only flashed in production after authentication with e.g. SX-4?

Dzirt · 10-08-2014, 10:33

Hello.
After SX4 auth and SPC send , also some more actions need, if not wrong. (i.e. logging and rest things)

Also, NVI exists inside FFU , and seems as updated by system after startup , but I not check that more deep and it just a though.

german gsm team · 10-08-2014, 10:48

Are there other locations / partitions in phone where tunings , bandlocks etc. are stored?

german gsm team · 10-08-2014, 10:50

Since some Lumia 920 RM-820 lost WCDMA AWS band after flashing with ATT firmware and didn't get back it after reflashing with e.g. Canadian or Latin America firmware.

Dzirt · 10-08-2014, 11:09

I not check about that , but NVI files have some settings.
In DPP - basic drivers and NKSecurity. Others - not check well.

10-08-2014, 10:28	#1 (permalink)
german gsm team No Life Poster Join Date: Mar 2002 Location: Somewhere in the World Age: 54 Posts: 1,425 Member: 9848 Status: Offline Thanks Meter: 144	WP8 NVI files - are they really flashed to phone? See topic. Are these files really flashed to phone after or before FFU with common flashing tools? They contain modem settings and aren't signed. Or are they only flashed in production after authentication with e.g. SX-4?

10-08-2014, 10:33	#2 (permalink)
Dzirt No Life Poster Join Date: Nov 2009 Location: Syberia Age: 34 Posts: 12,508 Member: 1157320 Status: Offline Thanks Meter: 6,192	Hello. After SX4 auth and SPC send , also some more actions need, if not wrong. (i.e. logging and rest things) Also, NVI exists inside FFU , and seems as updated by system after startup , but I not check that more deep and it just a though.

10-08-2014, 10:48	#3 (permalink)
german gsm team No Life Poster Join Date: Mar 2002 Location: Somewhere in the World Age: 54 Posts: 1,425 Member: 9848 Status: Offline Thanks Meter: 144	Are there other locations / partitions in phone where tunings , bandlocks etc. are stored?

10-08-2014, 10:50	#4 (permalink)
german gsm team No Life Poster Join Date: Mar 2002 Location: Somewhere in the World Age: 54 Posts: 1,425 Member: 9848 Status: Offline Thanks Meter: 144	Since some Lumia 920 RM-820 lost WCDMA AWS band after flashing with ATT firmware and didn't get back it after reflashing with e.g. Canadian or Latin America firmware.

10-08-2014, 11:09	#5 (permalink)
Dzirt No Life Poster Join Date: Nov 2009 Location: Syberia Age: 34 Posts: 12,508 Member: 1157320 Status: Offline Thanks Meter: 6,192	I not check about that , but NVI files have some settings. In DPP - basic drivers and NKSecurity. Others - not check well.