How To Guide [GSI][PHH][13] Guide & Support [Mojito][Sunny]

Do you believe GSIs overcome custom ROMs in future ?

  • Meh. Both suck. Android devices are increasingly turning restrictive every year.

    Votes: 12 35.3%
  • I don't think so. They'll never overcome custom ROMs.

    Votes: 5 14.7%
  • I have fair skepticism on it. Both will have balanced usershare.

    Votes: 14 41.2%
  • Absolutely. Device tree maintenance is outdated already.

    Votes: 9 26.5%

  • Total voters
    34
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MPK99

Senior Member

Why should I use a GSI ? Mojito already have custom ROMs ¯\_(ツ)_/¯

Yes. But this thread exists due to the following reasons:
  • You don't wanna fear about devs stop shipping updates.​
  • You don't wanna re-flash your custom recovery / kernel after each update.​
  • Unlike some ROMs, no clean flashes necessary after you update.​
  • You don't wanna be a flashoholic / beta tester of a ROM maintainer.​
  • GSIs are like Linux Distros. Flexible, hasslefree & minimal.​
  • All GSIs support signature spoofing out of the box.​
Differences between GSIs & ROMs:
  • ROM updates modify all the partitions (boot, recovery, kernel, system, vendor, etc). A GSI update is just a system partition that updates "only" the system, that runs upon stock firmware.​
  • ROMs might pass safetynet out of the box. But for GSIs, you must root & use magisk modules to achieve that.​
  • You can't flash gapps on vanilla GSIs, as you do on vanilla ROMs. You must use bgS/bgN GSI variants.​
  • For now, GSIs have to be installed via fastbootd, as recoveries still yet to support logical partitions. So you need computer available when you update or change them.​
AOSP GSI project is being alive for almost many years now. I've been daily driving his project on this device for almost two years. Everyone claim GSIs are buggy & not daily drivable, which is a complete false claim. There are no compromises with GSIs when compared to ROMs.

PREREQUISITES

Recommended GSIs :

INSTALLATION​

NOTE: I'm assuming you've already unlocked bootloader, backed up your data & know all the technical consequences of flashing & modding.
  • Download / extract all prerequisites in one place.​
  • From stock firmware, edit flash_all_except_data_storage.bat/sh & modify last line to fastboot reboot fastboot
  • Enter fastboot mode {vol_down+power}, connect to PC & flash firmware using above edited script. When device enters fastbootd, from terminal/cmd execute :​
  • fastboot erase userdata
  • fastboot flash vbmeta vbmeta.img
  • fastboot flash system <gsi-file.img> (ignore INVALID SPARSE warning)​
  • fastboot reboot & make sure your GSI boots up. Power off & return to fastboot again.​
  • fastboot boot <twrp-file.img>, head to Advanced & run flash current TWRP to make recovery persistent across reboots.​
  • Finally Magisk (for root, safetynet fix, additional modding, etc).​
BUG_1: Don't touch the screen while booting to avoid touch issues after you boot (this bug occurs only on custom kernels).
BUG_2: Don't set up password on startup wizard. Instead, set it up later & then disable Android Setup app if it exists. Else it'll crash fingerprint settings.

UPDATE / DIRTY FLASH HOW ?​

  • fastboot reboot fastboot
  • fastboot flash system <new-gsi.img> & reboot twice
All phh based GSIs are dirty flashable (unless you switch between vanilla & gapps). If any GSI doesn't boot up, you can always reflash the older GSI & restore the previous state without any data wipes.

POST CONFIGURATION​

  • Enable the following Settings > Phh Treble Settings:
  • Qualcomm features / Use alternate camera profile & audio policy
  • Misc features / Disable audio effects
  • IMS features / Force the presense of 4G calling & Install IMS Apk for Qualcomm vendor from notification panel.​
  • Setup magisk, hide the app, enable Zygisk & Enforce Denylist.​
  • Use SafetyNet-Fix module to pass safetynet. Still won't pass? Try Pixel-Props (redfin) that ensures fingerprinting.​
  • microG module if you chose vanilla variant (Safetynet works. Most of the banking apps work except gpay).​
NOTE: Flash custom kernels only through your custom recovery. Flashing through kernel managers (FKM, SPKM, etc) is not suggested.

MAGISK NOT WORKING ?​

In this case, the GSI you selected isn't securized (comes with su bydefault). Through TWRP, do
  • mount -o rw /dev/block/mapper/system_a /system_root from terminal
  • Code:
    rm /system_root/system/xbin/su
    rm /system_root/system/bin/phh-su
    rm /system_root/system/etc/init/su.rc
  • Or instead, you can use recovery's file manager to delete the above files. Then reboot.

EXTRAS​

My Recommendations for great experience:
  • SPKM to set GPU > GPU Governor > Performance (fixes UI lags)​
  • Lawnchair / Quickswitch for launcher customization with gesture navigation support.​
  • Lineage Dialer for built-in call recording (push into /product/priv-app/Dialer/Dialer.apk).​
  • ANXCam for MIUI camera's post processing.​
  • GCam for google camera's post processing.​
  • Aurora Store / Droid for microg users.​
  • Kiwi Browser for chrome extensions support.​
  • Migrate to backup / restore user apps & data, incase you lose your setup.​
Thanks for reading all the way through here.
 
Last edited:

Hami_Do

Senior Member
Aug 24, 2013
427
445
I have been using GSIs on my old Huawei P10 lite for almost 3 years, and it was a very good experience.
Now with mojito I find myself lazy always using Roms -_- '
Thanks for the guide!
 

MPK99

Senior Member
I have been using GSIs on my old Huawei P10 lite for almost 3 years, and it was a very good experience.
Now with mojito I find myself lazy always using Roms -_- '
Thanks for the guide!
The only official dev for this device, who's actually from core development of a reputed project (PE), is Zid. There aren't any, as I do not find others to be helping from core (except couple of kernel devs).

ROMs have no complete guarantees for future updates. Although you can use other project GSIs such as crD by Nazim, LOS by Andy, phhusson's the one who's consistently providing regular monthly updates with built-in OTA.
 
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Hami_Do

Senior Member
Aug 24, 2013
427
445
Can I install MIUI gsi roms like this?
Miui and its similar sGsi ( semi gsi ) such as OneUi , Color os .. and other AOSPs based ported with Erfan tool aren't real gsi.
They miss patches from Phh and Andy.
The recommanded gsis with full patches (minimum issues) are from Phh (aosp), AndyYan (LOS 18.1/19.1), Ponces (PE) and many others you can check them here for example :

There are also more by Nazim and eremitein, you can check them in telegram groups.
 
Last edited:
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AlsoKouki

Member
Aug 1, 2022
22
1
can i use this method from aosp?
and what stock rom version should i use?
 
Last edited:

AlsoKouki

Member
Aug 1, 2022
22
1
in the last line i should change it to "fastboot %* reboot fastboot" or "fastboot reboot fastboot" ?
 

AlsoKouki

Member
Aug 1, 2022
22
1
I bet it's usb drivers issue. There's guide link in main post.
You should know the issue if you flashed a fastboot rom before.
1659341924443.png
1659341950324.png

nah its already installed and its detected in fastboot
1659341702963.png

i tried move the firmware to plarform-tools/ after i execute it this happen
 

Samir2298

Senior Member
Apr 3, 2015
268
26
No issues here. The procedure I've laid out is exact to that of my device. Some more info from your side might help, such as what you did from the start.
Followed exactly as in OP.

I did remove some apps tho from product app/priavpp and system app/privapp, so maybe that caused an issue? Is there anything related to fingerprint in those folders?
 

MPK99

Senior Member
tried move the firmware to plarform-tools/ after i execute it this happen
This is redmi Note 10 forum mate. So I had stock ROM link of mojito/sunny. Your device (3rd screenshot) closely states it's Rainbow (Wiko).

Although this is a GSI guide, I suggest you to flash your own device's stock rom.
Still, it won't be enough caz I don't have overlay patch of your device.
 
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MPK99

Senior Member
I did remove some apps tho from product app/priavpp and system app/privapp, so maybe that caused an issue? Is there anything related to fingerprint in those folders?
Probably. Try removing only one or two apps that are disablable from settings.. For overlay just 20kB is needed.
You can reflash system image from fastbootd & boot up without wiping again.
 

Samir2298

Senior Member
Apr 3, 2015
268
26
Probably. Try removing only one or two apps that are disablable from settings.. For overlay just 20kB is needed.
You can reflash system image from fastbootd & boot up without wiping again.
Alright, thanks! I'll try reflash.

Sorry for off-topic, does microg support whatsapp google drive backup/restore? I searched google but all answers are years old.
 

AlsoKouki

Member
Aug 1, 2022
22
1
This is redmi Note 10 forum mate. So I had stock ROM link of mojito/sunny. Your device (3rd screenshot) closely states it's Rainbow (Wiko).

Although this is a GSI guide, I suggest you to flash your own device's stock rom.
Still, it won't be enough caz I don't have overlay patch of your device.
ahh sorry its because the spoofing feature from the rom,i forgot to disable that, will disable it and try again
 

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  • 2
    Seems like SF back to norm.
  • 12

    Why should I use a GSI ? Mojito already have custom ROMs ¯\_(ツ)_/¯

    Yes. But this thread exists due to the following reasons:
    • You don't wanna fear about devs stop shipping updates.​
    • You don't wanna re-flash your custom recovery / kernel after each update.​
    • Unlike some ROMs, no clean flashes necessary after you update.​
    • You don't wanna be a flashoholic / beta tester of a ROM maintainer.​
    • GSIs are like Linux Distros. Flexible, hasslefree & minimal.​
    • All GSIs support signature spoofing out of the box.​
    Differences between GSIs & ROMs:
    • ROM updates modify all the partitions (boot, recovery, kernel, system, vendor, etc). A GSI update is just a system partition that updates "only" the system, that runs upon stock firmware.​
    • ROMs might pass safetynet out of the box. But for GSIs, you must root & use magisk modules to achieve that.​
    • You can't flash gapps on vanilla GSIs, as you do on vanilla ROMs. You must use bgS/bgN GSI variants.​
    • For now, GSIs have to be installed via fastbootd, as recoveries still yet to support logical partitions. So you need computer available when you update or change them.​
    AOSP GSI project is being alive for almost many years now. I've been daily driving his project on this device for almost two years. Everyone claim GSIs are buggy & not daily drivable, which is a complete false claim. There are no compromises with GSIs when compared to ROMs.

    PREREQUISITES

    Recommended GSIs :

    INSTALLATION​

    NOTE: I'm assuming you've already unlocked bootloader, backed up your data & know all the technical consequences of flashing & modding.
    • Download / extract all prerequisites in one place.​
    • From stock firmware, edit flash_all_except_data_storage.bat/sh & modify last line to fastboot reboot fastboot
    • Enter fastboot mode {vol_down+power}, connect to PC & flash firmware using above edited script. When device enters fastbootd, from terminal/cmd execute :​
    • fastboot erase userdata
    • fastboot flash vbmeta vbmeta.img
    • fastboot flash system <gsi-file.img> (ignore INVALID SPARSE warning)​
    • fastboot reboot & make sure your GSI boots up. Power off & return to fastboot again.​
    • fastboot boot <twrp-file.img>, head to Advanced & run flash current TWRP to make recovery persistent across reboots.​
    • Finally Magisk (for root, safetynet fix, additional modding, etc).​
    BUG_1: Don't touch the screen while booting to avoid touch issues after you boot (this bug occurs only on custom kernels).
    BUG_2: Don't set up password on startup wizard. Instead, set it up later & then disable Android Setup app if it exists. Else it'll crash fingerprint settings.

    UPDATE / DIRTY FLASH HOW ?​

    • fastboot reboot fastboot
    • fastboot flash system <new-gsi.img> & reboot twice
    All phh based GSIs are dirty flashable (unless you switch between vanilla & gapps). If any GSI doesn't boot up, you can always reflash the older GSI & restore the previous state without any data wipes.

    POST CONFIGURATION​

    • Enable the following Settings > Phh Treble Settings:
    • Qualcomm features / Use alternate camera profile & audio policy
    • Misc features / Disable audio effects
    • IMS features / Force the presense of 4G calling & Install IMS Apk for Qualcomm vendor from notification panel.​
    • Setup magisk, hide the app, enable Zygisk & Enforce Denylist.​
    • Use SafetyNet-Fix module to pass safetynet. Still won't pass? Try Pixel-Props (redfin) that ensures fingerprinting.​
    • microG module if you chose vanilla variant (Safetynet works. Most of the banking apps work except gpay).​
    NOTE: Flash custom kernels only through your custom recovery. Flashing through kernel managers (FKM, SPKM, etc) is not suggested.

    MAGISK NOT WORKING ?​

    In this case, the GSI you selected isn't securized (comes with su bydefault). Through TWRP, do
    • mount -o rw /dev/block/mapper/system_a /system_root from terminal
    • Code:
      rm /system_root/system/xbin/su
      rm /system_root/system/bin/phh-su
      rm /system_root/system/etc/init/su.rc
    • Or instead, you can use recovery's file manager to delete the above files. Then reboot.

    EXTRAS​

    My Recommendations for great experience:
    • SPKM to set GPU > GPU Governor > Performance (fixes UI lags)​
    • Lawnchair / Quickswitch for launcher customization with gesture navigation support.​
    • Lineage Dialer for built-in call recording (push into /product/priv-app/Dialer/Dialer.apk).​
    • ANXCam for MIUI camera's post processing.​
    • GCam for google camera's post processing.​
    • Aurora Store / Droid for microg users.​
    • Kiwi Browser for chrome extensions support.​
    • Migrate to backup / restore user apps & data, incase you lose your setup.​
    Thanks for reading all the way through here.
    4
    UPDATE: Overlay has been merged. No need of manual overlay injection for the upcoming phh based A13 GSIs.
    3
    it is okay for us to give review about the GSI that we have been tested ? or better on the other thread ? asking for an opinion here 😅
    I don't really care. Discuss anything mate. This thread is all about gsi support for community.
    The more you guys talk, the more better.
    (just dont private msg. I want all discussions to be public✌️)
    3
    Here's the report for the current GSI development state. This is to keep this thread alive.
    • Phhusson now moved from his personal builds to CI/CD builds (testing, automated) which is now called TrebleDroid (AOSP-TD).
    • But he still hasn't decided to ship secure builds yet (which help pass CTS & magisk compatibility)
    • Lot of AOSP-TD based builds have been released by many developers/builders, which some also happened to have secure builds. Links are in the OP.
    • A13 forks are still in development stage. So you might experience couple of bugs here & there.
    • As of now, the last stable A12 builds held to November sec patch. Beware if you still on Nov patch, since it has a serious security vulnerability (CVE-2022-20465) that allows anyone to unlock your encrypted device through sim PUK reset, which has been patched on December sec patch.
    • Andy's maintaining his own phh treble patchset builds which he calls LineageOS Light. It might or might not be dirty flashable over other TD based builds.
    • The current overlay state is the same as of last year. If anyone have any requests regarding overlay modification, plz do.
    If you have any doubts & issues, discussion is always open. This isn't my personal device anyways, so I'm free to experiment anything on it. Currently it's running phh's android_13.0.0_r14 ci-20221219 (system-td-arm64-ab-vndklite-vanilla), securized, magisk rooted, microg moduled & passing safety net via kdrag0n fix & redfin props.

    MERRY JINGLE CHRISTMAS 🎅🎄

    3
    Followed exactly as in OP.

    I did remove some apps tho from product app/priavpp and system app/privapp, so maybe that caused an issue? Is there anything related to fingerprint in those folders?
    If you want to gain more space (≈ 200mb) in system you can delete 2 folders safely without problems :
    /system/system_ext/apex/com.android.vndk.v28/
    and
    /system/system_ext/apex/com.android.vndk.v29/
    Already did it in DSSI builds without issues.