Hikey970 Recovery : No such partition reported

On Hikey970, I have replaced the UFS from on board one to Micron UFS. So, I need to perform recovery using the steps in Hikey970 Board Recovery.

While doing so I get the below error. Please help to resolve it.

$ sudo fastboot flash fastboot l-loader.bin
target reported max download size of 134217728 bytes
sending ‘fastboot’ (1152 KB)…
OKAY [ 0.214s]
writing ‘fastboot’…
FAILED (remote: No such partition.)
finished. total time: 0.215s

$ sudo fastboot flash fip fip.bin
target reported max download size of 134217728 bytes
sending ‘fip’ (1228 KB)…
OKAY [ 0.155s]
writing ‘fip’…
FAILED (remote: No such partition.)
finished. total time: 0.155s