I have an unlocked S9 + US from the operator Sprint:
model's number: SM-G965U
Version : G965USQU3ARG2
oeprator soft ver: SAOMC_SM-G95U_OYN_SPR_00_0089
unlocked with them : https://store.unlockboot.com/unlock-samsung-phone/
It works perfectly with my french SIM but I want to flash it with an official samsung US rom to eliminate all traces of the sprint rom, could I still use my French and Algerian SIM please? Any risk with a standard flash? Where can I find the stock rom?