HOW CAN I RESTORE OFFICIAL FIRMWARE

[ZEVS]

How can I restore official firmware on my samsung m30s? What program can I use for this????

[Devv_007]

Odin tool.(Available in sammobile.com with firmware)

[ZEVS]

how can I do it without Odin

[hedgehog]

you'll need to root device flash it and then reinstall previous firmware

[ZEVS]

Can I do it with Smartswitch
What other programs and ways do you know. Non root. No Odin