i am not getting any recovery drive when connecting to pc in fastboot mode,,,i will try to get in recovery mode as you said

Happy to help.

If you are still facing problems try following steps
1. While rebooting, the moment the screen goes black just Keep pressing Volume Up button and most likely you will end up in recovery and try this few times if doesn't work first time.
2.While in recovery mode wipe data and then reboot.
3.If wipe doesn't solve the problem then again go to recovery and connect your phone to pc and there will be a folder recovery, copy and paste the Fyme 5 version and this time wipe data and update.

Sorry to replying late.
Try to go to recovery mode there you will see recovery drive. It doesn't come up in fastboot mode.
Hope that help.

i use flyme 6 global stable