samsung a310f unknown baseband and imei null

[mehrfar]

I flashed a310f by 4 file firmware without bootloader file but after flash the phone is unknown baseband and imei null
in j700h with this problem I flash the frimware one file and after flash i reset the phone.after reset problem will be solved.
but for a310f I do not know what to I do
please help me

[greenman]

Can you confirm whether this was an official Samsung/Sammobile firmware that you flashed?

Can you install this app and post:
Product Code
Original CSC code
Active CSC code
PDA version
CSC version
Baseband version
Android version
Mobile operator
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[mehrfar]

very thanks for your reply
model : SM-A310F
Product name : a3xeltexx
Original CSC code : CHN
Active CSC code :VD2
PDA version : A310FXXU1AOLE
CSC version :A310FVFG1AOL2
Baseband version : blank
Android version :5.1.1
Mobile operator : blank

[greenman]

The original CSC code is for China.
It looks like you have tried to convert a Chinese phone (probably an SM-A3000) using A310F firmware.
This is why the phone has lost its IMEI.

Re-flash the original firmware and you may be able to recover your IMEI.

This is my guess at the original firmware.
What does the phone model say in Settings and Download mode?
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[mehrfar]

thanks again
I chacked download mode before flash.the product neme is and was SM-A310F
Several times this happened to me.after flash by 4 file firmware but without bootloader , the phones lost imei and baseband.
maybe different firmware or ....

[greenman]

Having an original CSC code of CHN (China) when China does not have the SM-A310F is what is puzzling me.
Something is not right.

Use SmartSwitch to re-install your original but latest firmware:
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[mehrfar]

thanks again
but smart switch shows phone is up to date.
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and in download mode shows this phone not supported.
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and in device initialization shows this messege :
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[greenman]

Ok, that adds to the mystery.
The Firmware on SmartSwitch is shown as OLE (XXX)
XXX is not a samsung csc code, and we know from post #3 that you have Germany Vodafone firmware.
By the way, this firmware is not up to date as you can see here:
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I am very unsure about this phone.
I believe that it has been modified - you can check this in the INFO app by using the menu top left.
Look at
Refurbishment check
IMEI and S/N check

[mehrfar]

Thank you greenman
I'll check these tomorrow.8 hours later
This phone has the frp lock problem and I flashed its for downgrade.
After downgrade frp lock set is off but this imei and baseband is big problem now
Sorry for my weak or bad english

Sent from my SM-G935F using Tapatalk

[greenman]

There is a new FRP bypass from Root Junky.
Hit the internet today.
If you have the FRP problem try it.
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