@piero, thank you for your detailed explanation. Well, how /e/OS is installed via TWRP is generally known to me.
But I wasn’t talking about installing, but about updating without data loss. That is a difference. Hence my question again:
JUST DON’T WIPE OR FORMAT ANYTHING…
Installing or updating simply replace the /system partition content (and sometime other needed partitions only on devices still maintened by the vendor)
But don’t touch the /data partition (only when upgrading, you may need to wipe or format the /data partition if device tree has change)
Okay, that’s news to me. I will try it out.
Update
I am ashamed that I did not know this TWRP update method before. Until this moment, I assumed that TWRP INSTALL eliminates personal data and additionally installed apps. My recent test on a Galaxy A5 2017 (a5y17lte) proved me wrong. @piero, thanks for the tip.
You may also try OrangeFox, as some TWRP fails to decrypt with recent (12+ ?) Android.
It works exactly the same way.
I am a friend of e-Recovery because it does its work completely in the background. For the ‘normal user’ I see this as an advantage, because he does not have to deal with the numerous options of TWRP or OrangeFox Recovery. It is undisputed that TWRP or OrangeFox Recovery offers the advanced user and enthusiast far more possibilities. But more does not always mean better. It always depends on the user’s requirements.
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Following the instructions,
Huge thanks to @ronnz98 for sharing this! I’m quite excited to have found a build of /e/OS for clover (mine is the 8" WiFI-only model), I’ve been wanting to run /e/OS for a long time and I just happened to find this build in a search. I’m happy to report that it seems to work perfectly, no notable bugs so far. This is a much cleaner solution than installing something based on LineageOS and then trying to install Magisk and Lsposed for signature spoofing and then finally MicroG, which is what I was doing before.
The WiFI-only versions of the Mi Pad 4 appear to have some sort of a quirk that causes excessive power drain with the kernel of most custom ROMs. (The only ROMs that didn’t have the issue were ArrowOS and MoKee, both of which are now defunct. Those had basically 0% battery drain after 8 hours of standby in airplane mode.) This build inherits that problem from LineageOS 20, so it’s not perfect, but the drain is less severe than with something like CarbonROM, and it’s manageable at ~3% drain in 8 hours of standby.
Thanks for you feedback! That is very useful for other users and also for me since I might buy a Xiaomi Mi Pad too. Since this device is actively developed chances are high that its more stable and optimized in the future. Even LineageOS 21 is supported now, when next /e/OS version (U?) is available I will try to port.
Hopefully this device makes it officially supported by eFoundation.
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Nice, looking forward to it. That would be based on this build here?
https://xdaforums.com/t/rom-13-14-clover-lineageos-20-21-for-xiaomi-mi-pad-4-unofficial.4514507/
In that case just FYI version 21 has a bug when no Gapps are installed where it can’t proceed past the initial setup process. But maybe the /e/OS userspace wouldn’t have that issue.
Another thing I wanted to mention that I appreciate is that you put your builds on Sourceforge, which is much more fast and reliable than the Androidfilehost. com links that other ROMs use.
That would be fantastic!
It still seems to be a very relevant device in the tablet market space. Plenty fast and good battery size, and you could get them unlocked directly from Xiaomi, which is the most important thing for OSS fans like me. I haven’t checked recently if they’re still available new and unlocked and at what price.
Hey @ronnz98,
will there be a /e/OS-T V1.20 from you with the new BlissLauncher optimized for tablets?
When 1.20 will be available I’ll do a new build for clover
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Update for /e/OS-T 1.20:
e-1.20-t-20240223-UNOFFICIAL-clover.zip
https://sourceforge.net/projects/eosbuildsronnz98/files/XiaomiSmartphones/e-1.20-t-20240223-UNOFFICIAL-clover.zip/download
Source for clover have been updated too.
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- Vendor Name: Xiaomi
- Device name: Mi Pad 4 plus
- Device CodeName: clover
- Version of /e/OS which existed previously: e-1.18-t-20231214-UNOFFICIAL-clover by @ronnz98
- Version of /Recovery which existed previously: recovery e-1.18-t-20231214 by @ronnz98
- The device is not rooted
- Version of e-Apps which existed previously:
foundation.e.apps Version 2.6.7
*foundation.e.blisslauncher Version 1.18.0*
foundation.e.browser Version 119.0.6045.200
foundation.e.camera Version 1.51.1
com.android.gallery3d Version 1.1.40030
com.google.android.gms (microG) Version 0.3.0.233515
- Version of e-Apps after installation of e-1.20-t-20240223-UNOFFICIAL-clover by @ronnz98
foundation.e.apps Version 2.6.12
**foundation.e.blisslauncher Version 1.18.0**
foundation.e.browser Version 119.0.6045.200
foundation.e.camera Version 1.52
com.android.gallery3d Version 1.1.40030
com.google.android.gms (microG) Version 0.3.0.233515-107 (ab0f39d)
com.android.cellbroadcastreceiver.module Version R-initial
I have tried the /e/OS update V1.20 in two ways:
- via host machine PC via
adb sideload - on clover tablet via
local update
Both times the existing e-Recovery 1.18-T was not updated to the current version 1.20-T.
The announced new BlissLauncher version is unfortunately not integrated.
My quick test shows me a perfectly working /e/OS 1-20-T. Many thanks for building @ronnz98
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Dear @ronnz98 can you schedule a /e/OS-T V2.0 update with BlissLauncher 3.0 for late April / early May 2024 for the “clover”?
Yes. I’ll add it on my todo list 
Hi ronnz98, thank you for this rom on mi pad 4. tested and it run smoothly. i hope u will keep it updated. by the way, is there any option available for screen to turn on using magnetic case in setting?
Yes, will update. SInce I’m not the developer please reach out to respective XDA forum at my first posting here at this thread
Just realized that there are also 4.19 Kernel Sources for clover. Please test and provide feedback:
e-1.21-t-20240420-UNOFFICIAL-clover.zip
https://sourceforge.net/projects/eosbuildsronnz98/files/XiaomiSmartphones/e-1.21-t-20240420-UNOFFICIAL-clover.zip/download
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Vendor Name: Xiaomi
Device name: Mi Pad 4 plus (LTE)
Device CodeName: clover
Version of /e/OS which existed previously: e-1.20-t-2024022314-UNOFFICIAL-clover by @ronnz98
Version of /Recovery which existed previously: recovery e-1.20-t-20240223 by @ronnz98
The device is not rooted
/e/ Updater default setting: Update recovery
Version of e-Apps after installation
foundation.e.apps Version 2.7.1
foundation.e.blisslauncher Version 1.18.0
foundation.e.browser Version 119.0.6045.200
foundation.e.camera Version 1.52
com.android.gallery3d Version 1.1.40030
com.google.android.gms (microG) Version 0.3.0.233515-129 (f11ed71)
Manual update e-1.21-t-20240420-UNOFFICIAL-clover.zip by @roonz98 via e-Recovery from microSD card
Install completed with status 0.
but …
… system only boots into e-Recovery V1.20 with the error message:
Can't load Android system. Your data may be corrupt. ...
Try again
Factory data reset
After the factory reset and format data the system boots and can be set up.
Negative: The system shuts down by itself after one minute, after I have booted into fastboot mode!
Check whether e-recovery V1.20 has been updated to V1.21, result: No - no update; e-Recovery V1.20 is still installed.
Too bad, so I installed e-recovery V1.21 manually and reinstalled the system.
After the completely new installation “clean install” of e-1.21-t-20240420-UNOFFICIAL-clover.zip by @ronnz98 via e-Recovery V1.21 - the fastboot mode bug is still present, which means: When I boot into fastboot mode, the system shuts down completely. Before the screen remains black, the loading status is briefly displayed graphically.
Classy 
There is a new option at the bottom of the settings: mi Device Settings - Advanced Settings
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There is a new option at the bottom of the settings:
mi Device Settings - Advanced Settings
.
What surprises me:
The Device Settings option - USB Fastcharge via USB 3.0 port ~ 900 mA.
According to the data sheet, the clover has a USB Type-C 2.0 port and a power supply with 5V~2A (I have the original Xiaomi NO-EU power supply). USB 2.0 only delivers 500mA according to the standard.
But maybe the USB-C port can do more than officially released due to the Qualcomm SDM660 Snapdragon 660 chipset. It would be a nice additional goodie.
Nevertheless: The fastboot problem (automatic shutdown) is not insignificant …
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