Vodafone VDF 200 network re-locked after sotware update

[msa]

Hi

I have unlocked few Vodafone VDF-200 using SPD module and it worked fine after unlock. Customers are bring the phones back because the phone has been re-locked to vodafone again after the automatic sotware update. Why is this happening?

Here is the log of the phone which I had to unlock agian after software update.

Thanks

Card found: S/N : 0123****** , v0136
Chinese Miracle II [SPD module] v 1.26

Set mode to : SP [SC773x] eMMC [Android 5.x]

Operation : SP Unlock [ v1.26 ]
Mode : DirectUnlock

1. Remove battery. Insert battery back
2. Press and hold 'VolumeUp' and 'VolumeDown' keys
3. Insert cable

==== Wait for phone...

Phone found! [ 17 ]
Port Opened
Sync...
InitBoot Done [ 0x81 ] , Ver : SPRD3
Sync...
Sending FDL
[Info] : If SW freeze here more, than 15 seconds - remove cable
FDL Ready!
Boot Ver : SC773x Android 5.x eMMC v1.0 Inf
Sending FLASH FDL
FLASH FDL Ready!
Boot Ok!

Detected eMMC Flash , Structure detect Ok!

Checking Structure ...
SimLock state : Locked!
Unlocking ...
Unlock Done!

Elapsed: 00:00:32

Reconnect Power/Cable!

[JayDi]

Hello.
SPD OTA, if that tuned up, update NVM also, I had seen few examples for different vendors, uses SPD, where package contain calibrations and security items data.
It is Ok. SPD not contain any permanent flags ( probably, it check some "factory code" unlock flag, which are transfer during update, but it specified to vendors )

Possible patch FW, but it can be fixed, if vendor find that fact as well. So, unlock again as variant is better, than long workarounds. Possible try find more accurate way ( i.e. code generation and etc. ) But need samples on hands and time for every model. With samples all is hard.

Nowdays much vendors release just only security patches for old devices. Good reason to "fix" possible unlocks

[msa]

Thanks for the reply.

Yes its easy to unlock agian but this means the cutomser is dis-satisfied. These phones are my own new phones which I have unlock for re-sale. Its not good sales practice to tell the cutomer not to update software. Also the update does not give option to cancell according to last cutomer. He said he cancelled the OT update but phone still updated. I have also unlocked using codes but that also came back locked after update.

There must be a permanent fix?

Thanks

[JayDi]

Originally Posted by msa

Thanks for the reply.

Yes its easy to unlock agian but this means the cutomser is dis-satisfied. These phones are my own new phones which I have unlock for re-sale. Its not good sales practice to tell the cutomer not to update software. Also the update does not give option to cancell according to last cutomer. He said he cancelled the OT update but phone still updated. I have also unlocked using codes but that also came back locked after update.

There must be a permanent fix?

Thanks

Aha, you just confirmed about there is no any stored FACTORY_CODE flag, that mean device will relock after every update.

Permanent fix - custom rom with disabled ota only in that case.

[msa]

Any input from Infinity support please?

thanks

[JayDi]

So, answer from CM2 author not enough?

[msa]

Originally Posted by JayDi

So, answer from CM2 author not enough?

Sincere applogies master More than good enough, did not realise your status.

br

[msa]

Hi agian,

Any chance of directing me to flash file VDF-VFD200B01-UK_MR02a , this the version after update. Before update it was VFD200B01-UK03e. I have about 50 pieces I need to update, its going to take a long time via OTA.

Or Can I copy the downloaded OTA file from phone so that I can update the phones from memory card? any idea where the downloaded update file is stored on the Phone?

Thanks
msa

[msa]

Its ok Uncle Google found it here - Service and support -

Just hope no more updates.

Thanks

[JayDi]

You can just read FW with SPD module and after flash it to new phones.
Unlock them after and use. By default CM2 not touch nvm ares, until you not enable it ( update nvm ). If devices has been unlocked already - unlock again will not be required.

[msa]

Thank you , will do, it will save me some time.
br