Keep a copy of working TWRP/recovery and fastboot-able images.
If something goes wrong: use SP Flash Tool (MTK) with scatter and preloader to restore stock; follow step-by-step stock restore instructions from a trusted thread.
Step 6: Reboot
Go to Reboot > System.
First boot can take 5–10 minutes. Be patient.
Storage & Partition Flexibility
Resize /system – Stock reserves 2.5GB; custom ROMs allow repartitioning (using lptools on Unisoc) to enlarge /data for more apps.
F2FS support – Some Lineage builds format /data as F2FS instead of EXT4 → faster random writes (e.g., app installs feel snappier).
Step 3: Flash the ROM
If it’s a .img file (GSI):
Go to Install > Install Image > select the.img > choose System Image > swipe to flash.
If it’s a .zip file:
Go to Install > select the.zip > swipe.