A6010 firmware has flown, how to restore?

Question

Lenovo

There is a Lenovo A6010 smartphone, it lagged wildly, so I decided to reflash it, demolished the old recovery, installed twrp, erased the system, but didn’t back it up, after I started unpacking the zip archive with the new firmware, it says to me that the firmware has not been checked, even though I have such settings I was turned off, in general I decided to download another firmware, pulled out the battery, sd card, uploaded it, started the phone, didn’t go into MIUI mode (I came from the recovery from it), went into fastboot through keypresses, but the computer does not see it, when The usual inclusion endlessly shows the logo. Even if I find custom firmware, I don’t know how to install it. Help me, pliz)