[UNOFFICIAL][20191230] LineageOS 17.0 for UMIDIGI F1 [Android 10]

PeterCxy · Nov 5, 2019

Introduction

This is my port of LineageOS 17.0 for the UMIDIGI F1, with things mostly working as they are expected to. This ROM depends on the official vendor image, so please be sure you are on the latest official build before flashing this ROM onto your device. Also, since these MTK devices often come with some strange variants, please be aware that your lineage may vary.

Known Bugs

- VoLTE does not work (and probably won't work on any MTK device with custom ROMs any time soon) due to MTK's proprietary extensions.
- (Fixed since 20191230) Sometimes data connection can be randomly lost during reconnections. This can be fixed by either a reboot or `pkill phone` in a root shell (terminal).

Flashing Instructions

1. You MUST flash my TWRP port available here before trying to install the ROM
2. Reboot into TWRP, wipe data (no format needed), then install the ROM zip
3. Install anything else you would like (Magisk, OpenGAPPs, etc. OpenGAPPS beta for Android 10: https://sourceforge.net/projects/opengapps/files/arm64/beta/)
4. Reboot into system and enjoy.

Downloads

20191230-1: https://www.androidfilehost.com/?fid=4349826312261687930

20191105-1: https://www.androidfilehost.com/?fid=4349826312261619909

Source code

Device tree available at https://github.com/PeterCxy/android_device_umidigi_F1
Kernel source code is not available from UMIDIGI, unfortunately.

Screenshots (with OpenGAPPS beta)

Lolithetrolli · Nov 6, 2019

What do you mean by "This ROM depends on the official vendor image" Do I need to flash the latest firmware from Umidigi, then flash Lineage?

PeterCxy · Nov 6, 2019

Lolithetrolli said:
What do you mean by "This ROM depends on the official vendor image" Do I need to flash the latest firmware from Umidigi, then flash Lineage?

Actually I don't think there is much change in umidigi's firmware so you are probably fine with pretty much any vendor image. I am on the September vendor image which shows as 20190724

Lolithetrolli · Nov 6, 2019

While I enjoy your effort for the port it's really rough around the edges. Settings randomly crash, NFC randomly crashes, there's no difference between default dark mode and black dark mode, it lacks accents other than default, after enabling developer settings numbers appear on the left hand side of the status bar, and GAPPS doesn't even have android 10 available yet. Again, thanks for the port, but it's not for me.

PeterCxy · Nov 7, 2019

Lolithetrolli said:
While I enjoy your effort for the port it's really rough around the edges. Settings randomly crash, NFC randomly crashes, there's no difference between default dark mode and black dark mode, it lacks accents other than default, after enabling developer settings numbers appear on the left hand side of the status bar, and GAPPS doesn't even have android 10 available yet. Again, thanks for the port, but it's not for me.

Somehow I'm using it without any random crashes... Are you sure you have tested on the latest firmwares from umidigi? And are you sure you have wiped data properly? If those crashes only happen for you and not for me, then without logs it's simply impossible for me to fix anything.

And OpenGAPPS has beta version for Android 10, check it out at https://sourceforge.net/projects/opengapps/files/arm64/beta/

On the accent color thing, please wait until LineageOS 17 ports every feature over. For now having most things working is the primary focus.

SnapTheRipper · Nov 8, 2019

Thanks for bringing a new life to an already awesome device! I was thinking on changing device due to lack of support, but now I'm surely sticking around! I have a couple of questions tho:

- Is it possible to add tweaks to this kernel? Like 2DTW, F2FS and maybe some more performance/battery gains? Or maybe upgrade it, like to 4.9?
- What about performance in games and/or more demanding tasks? I noticed this on all the GSI's that I tried, because they weren't optimized for the device, and it got hot easily.

Thanks once again for making this dream a reality! I Will test this along with your recovery when I can! Cheers!

mrmazak · Nov 8, 2019

SnapTheRipper said:
Thanks for bringing a new life to an already awesome device! I was thinking on changing device due to lack of support, but now I'm surely sticking around! I have a couple of questions tho:

- Is it possible to add tweaks to this kernel? Like 2DTW, F2FS and maybe some more performance/battery gains? Or maybe upgrade it, like to 4.9?
- What about performance in games and/or more demanding tasks? I noticed this on all the GSI's that I tried, because they weren't optimized for the device, and it got hot easily.

Thanks once again for making this dream a reality! I Will test this along with your recovery when I can! Cheers!

This seems to be built with stock kernel. As there is no kernel source released, the addition to kernel mods is not currently available.

SnapTheRipper · Nov 9, 2019

mrmazak said:
This seems to be built with stock kernel. As there is no kernel source released, the addition to kernel mods is not currently available.

Well I found some P60 sources from Nokia, idk if it could be useful...

https://github.com/nokia-dev/android_kernel_nokia_mt6771

Amdroid Pie:
https://github.com/nokia-dev/android_kernel_nokia_mt6771/tree/android-9.0

PeterCxy · Nov 9, 2019

SnapTheRipper said:
Thanks for bringing a new life to an already awesome device! I was thinking on changing device due to lack of support, but now I'm surely sticking around! I have a couple of questions tho:

- Is it possible to add tweaks to this kernel? Like 2DTW, F2FS and maybe some more performance/battery gains? Or maybe upgrade it, like to 4.9?
- What about performance in games and/or more demanding tasks? I noticed this on all the GSI's that I tried, because they weren't optimized for the device, and it got hot easily.

Thanks once again for making this dream a reality! I Will test this along with your recovery when I can! Cheers!

It is not technically impossible, but it would require a LOT of effort to reverse-engineer an entire kernel by piecing together open-source components from other manufacturers, and many of these vendors using MTK SoCs do not have open-source kernel just like Umidigi, though it's technically illegal to do so. I'm definitely not going to do this any time soon.

SnapTheRipper · Nov 9, 2019

PeterCxy said:
It is not technically impossible, but it would require a LOT of effort to reverse-engineer an entire kernel by piecing together open-source components from other manufacturers, and many of these vendors using MTK SoCs do not have open-source kernel just like Umidigi, though it's technically illegal to do so. I'm definitely not going to do this any time soon.

Now I'm lost ? don't get me wrong, I didn't started yet to develop, but if Umidigi has an "open source" kernel, could it be decompiled somehow from the stock firmware?

PeterCxy · Nov 9, 2019

SnapTheRipper said:
Now I'm lost ? don't get me wrong, I didn't started yet to develop, but if Umidigi has an "open source" kernel, could it be decompiled somehow from the stock firmware?

Linux being open-source doesn't mean any modification to it is easily reverse-engineerable. There is no such thing as "decompilation", only reverse-engineering, which is exactly what I referred to as "not totally impossible". However, if you hope someone to devote an enormous amount of effort just to "decompile" a kernel, you'd better off just sue the manufacturer for kernel source code (they are legally bound to do so by using the Linux kernel). It's far more plausible.

SnapTheRipper · Nov 13, 2019

PeterCxy said:
Linux being open-source doesn't mean any modification to it is easily reverse-engineerable. There is no such thing as "decompilation", only reverse-engineering, which is exactly what I referred to as "not totally impossible". However, if you hope someone to devote an enormous amount of effort just to "decompile" a kernel, you'd better off just sue the manufacturer for kernel source code (they are legally bound to do so by using the Linux kernel). It's far more plausible.

Anyway

I tried the exact same steps but ended up in a splash screen loop. Any idea how to fix this (or how to grab a log of this, if needed)?

hyibin · Nov 16, 2019

No service on two of the sim card. Phone shows carrier, but no network.

Edited: Never mind. Start from fresh umidigi system, and all good.

hyibin · Nov 16, 2019

SnapTheRipper said:
Anyway

I tried the exact same steps but ended up in a splash screen loop. Any idea how to fix this (or how to grab a log of this, if needed)?

TWRP keep system read only, no more boot loop.

Shadow Of Leaf · Nov 18, 2019

test on Umidigi F1 Play

I make Kernel Changes to make your rom work on umidigi f1 play and it booted but a lot of issues :
- sim card doesnt recognize in second reboot
- A lot of NFC Force closes
- Sound is deteriorated (i Think it because the besloudness in the stock rom)
- Rom has a lot of features that not working (example percentage of battery is not showed after i enable it)

this just a report of 15 minutes testing roms

sinergine · Nov 21, 2019

It's possible to revert to stock? How?

mrmazak · Nov 23, 2019

sinergine said:
It's possible to revert to stock? How?

That would be easiest if you use twrp and make a backup , before flashing this. Same as with any rom, you should make backup first.

If you didn't do that, or the restore fails. Then use sp-flash tool and flash factory firmware.
Umidigi posts the firmware on there community web forum.

sinergine · Nov 23, 2019

SnapTheRipper said:
Anyway

I tried the exact same steps but ended up in a splash screen loop. Any idea how to fix this (or how to grab a log of this, if needed)?

Same for me

hyibin said:
TWRP keep system read only, no more boot loop.

How to resolve?

sinergine · Nov 23, 2019

sinergine said:
Same for me

How to resolve?

Resolved with reflash

hyibin said:
No service on two of the sim card. Phone shows carrier, but no network.

Edited: Never mind. Start from fresh umidigi system, and all good.

Now i've this problem.
Tried to restart all step from fresh system but no network

hyibin · Nov 24, 2019

sinergine said:
Tried to restart all step from fresh system but no network

You have to put sim cards in before the initial boot. I gave up because too many bugs.

[UNOFFICIAL][20191230] LineageOS 17.0 for UMIDIGI F1 [Android 10]

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