Question

Need unlocked firmware to flash on locked lmx420mm (lg k40) android v9

Imei=

359962103065197

Answer 1

X420MM

MTP

X420MM10k_00_MPCS_US_OP_0923.kdz

This stock firmware for your phone. You can't unlock your phone via firmware. You need use Device Unlock App from phone menu.

Comments

Can't i flash the X420N V20 and then it'll be unlocked?

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No, you can't unlock this phone via flashing.

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you have a firmware android 9.0 stock rom for lmx420hm? i downloaded a firmware but i can´t flashing, i used LGUP and LG FLash Tools but both apps show me wrong message, the first at the 4% close unexpectedly and second show me a wrong message: "required info cannot be found".

Thanks

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You need try use LG UP 1.16.

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justly that version i used but not work :/ i will try the last time. Do you know there another app for flashing firmware?

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Maybe problem with dll. You need download kdz extrator and unpack firmware and put dll file in LG UP folder.

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wich one dll i must put into LGUP folder? and it work for LG Flash Tools?

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Navigate to LGUP install directory (default C:\Program Files (x86)\LG Electronics\LGUP) and simply replace the 8994.dll in model\8994 directory.

8994.dll  is for example.

This don't work with LG Flash Tool. LG Flash Tool for too old phones.