adb kill-server sudo adb start-server flash twrp using fastboot #fastboot flash recovery twrp.img goto sideload from adb in zip sideload rom.zip #finally got cipheros booted on realme c15
adb reboot bootloader # =sudo #fastboot flash recovery twrp.img #fastboot reboot recovery src: https://drive.google.com/file/d/1roUf30GHzbbOIBzvQCO3kotgh7STDcgd/view?usp=sharing make copy to google drive if quota exceedes https://forum.xda-developers.com/t/updated-recovery-twrp-rmx2185-twrp-3-5-1-for-realme-c11.4236095/