[LeEco Le Max 2 ROMs, Kernels, Recoveries, & Other ] ChingghisKhan:
Please remember that everything depends on TWO IMPORTANT Factors:

1.) Is your hardware 100% OK?

2.) Do you flash CORRECTLY?

Assuming that your hardware is fine and you still face trouble, remember how to CORRECTLY do a CLEAN-Flash:

If you have a Launcher or Apps that let you Backup or Export the settings, do it.

Put all your important files on your PC. Assure that you have all Passwords for your stuff.

1. Go to TWRP recovery. I usually wipe EVERYTHING, except USB OTG just to be sure, even DATA and Internal Storage!

2. In TWRP recovery, flash the new ROM files in the following sequence: Firmware update (if any) > Custom ROM > GAPPS (I use MINI for extended functionality which is not available from Play Store) > Custom Kernel (if any). Then wipe Dalvik/Cache.

3. Reboot the system at least TWICE!!! or even more times if it doesn't run smooth.

4. Do the initial system setup (skip restoring your apps via Google account).

5. AFTER you have tested EVERYTHING, log into Google and restore your free and paid apps. It is usually a good idea to remove the Apps that you will never install again from the Play Store Library before you flash your device.

The current CORRECT TWRP for the x2 is as follows: twrp-3.2.3-1-x2.img

Any previous will NOT work!

We are on a treblized ROM!

If you are coming from a ROM with no Vendor partition, the new ROM will make one.

BUT: It may fail the first time, if so, flash again.

Once your device runs fine with Gapps (https://opengapps.org/) installed, go back into TWRP and make a Nandroid Backup.

Then install your Apps.

If you want to REALLY speed up your device without battery loss, use this: https://play.google.com/store/apps/details?id=com.paget96.lspeed&hl=de

BEFORE you tinker with L-Speed, make sure you have a Nandroid Backup in case you screw up.

Other very useful apps I use and highly recommend:

SD-Maid, Magisk, Greenify and its Magisk Module, GSam and GSam Helper (great for checking rogue Wake-Locks), MacroDroid, Magisk Manager, BusyBox,

Dual-SIM Selector: https://play.google.com/store/apps/details?id=net.pixelrush.dualsimselectortrial

If like the Pro Version: https://play.google.com/store/apps/details?id=net.pixelrush.dualsimselector

With this app, I can define auto-selection of SIM cards by country, contacts and much more.

XWidget and its Desktop app lets you edit or make your widgets on the PC - very convenient!

MyPhoneExplorer lets you manage your phone from the PC and it is great if you want to sync your contacts with Outlook:

https://play.google.com/store/apps/details?id=com.fjsoft.myphoneexplorer.client

System app uninstaller, batch uninstall: https://play.google.com/store/apps/details?id=com.jumobile.manager.systemapp.pro

Easy REboot. https://play.google.com/store/apps/details?id=com.mpdevelopers.easyreboot

AFWall+: https://play.google.com/store/apps/details?id=dev.ukanth.ufirewall

AdAway: https://adaway.org/

This is the very best ROM I have ever run on any phone, for the camera, use this: https://www.celsoazevedo.com/files/a...a/dev-serjo87/

GCam_5.1.018_by_SerJo87_1.6RC2_test4d_fixed-Fu24-6.apk

:oGood Luck to you all :)