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Microsoft Lumia 640 (microsoft-dempsey)

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Revision as of 19:12, 13 October 2020 by Nobodywasishere (talk | contribs)
This device is marked as not booting.
Status: started some research
Microsoft Lumia 640 Dual SIM
No image yet
No image yet
Manufacturer Microsoft
Name Lumia 640 Dual SIM
Codename microsoft-dempsey
Released 2015
Hardware
Chipset Qualcomm MSM8926 Snapdragon 400 (28 nm)
CPU Quad-core 1.2 GHz Cortex-A7
GPU Adreno 305
Display IPS LCD capacitive touchscreen, 16M colors 5.0 inches, 68.9 cm2 (~67.6% screen-to-body ratio) 720 x 1280 pixels, 16:9 ratio (~294 ppi density) Corning Gorilla Glass 3 ClearBlack display
Storage 8GB
Memory 1GB RAM
Architecture armv7
Software
Original software Microsoft Windows Phone 8.1
postmarketOS
Category testing
Pre-built images no


Contributors

  • Maxnet

Maintainer(s)

  • Maxnet

Users owning this device


Random thoughts

There is a way to get linux to boot on the device. Porting edk2 is needed, it is described in this guide : https://github.com/konradybcio/Lumia-EDK2-Guide. Also this edk2 would probably work with some small modifications : https://github.com/Dominduchami/Lumia830Pkg. Unfortunately there is no efistub or efiframebuffer support in the newest msm8226 kernel, so backporting it is required to get pmOS to boot on it.

If you got some information regarding this, please add it here.

It's possible to unlock the bootloader using WPinternals here, the device needs to be on Windows 10 Mobile. From there it may be possible to get an LK bootloader following this guide here (lk and boot shim). There is a Telegram group chat for Android4Lumia that may have more information that I missed on my brief skim through it here.


See also