While there is no official "portable" version of a custom ROM specifically branded for the Samsung Galaxy A01 Core

Portability score: 4/10 – Yes, you can flash GSIs, but expect hours of fixing libcutils and libhidl mismatches. No seamless porting from other devices because MediaTek’s kernel sources are incomplete.

Here's a step-by-step guide to installing a custom ROM on Samsung A01 Core:

The Samsung A01 Core, with a custom ROM, wasn't just a cheap phone anymore. It was the ultimate portable device. It was freedom in a 5.3-inch screen.

XDA Developers - Samsung Galaxy A01 Core Forum: This is the primary hub for developers sharing TWRP recovery builds and specific GSI installation guides.

2. GSI via Project Treble (if supported)

Your device might have partial Treble support after unlocking. If so: