Huawei rne-l21 frp not remove

SigmaKey v.2.28.07
995249536 Sigma dongle 2.28, Initializing...OK
Pack 1: Activated
Pack 2: Activated
Pack 3: Activated
--------- 2018-08-18 20:41:17 ---------
SigmaKey 2.28.07 HiSi: Remove FRP / Huawei ID
Phone model: RNE-L21
Version: :RNE-L21 8.0.0.332(C185)
Removing FRP lock...Not activated
Formatting FFS....Command not allowed