6301b Rm-323 Security test faild..
 

I have one 6301b rm-323 in contact service.Bus check in Mx-key
all info ok,But in last Security test faild...Suggest me what to do.
Thanx in advance...

1. first backup rpl ( go > imei and security tab > imei rebuild > backup rpl)
2. erase old pm ( go > pm tab > erase )
3. Reset npc data ( go> imei and security tab> reset NPC data)( must backup rpl before do this)
4. Erase pm again (go > pm tab > erase )
5.Write rpl from backup ( go > imei and security tab > imei rebuild > restore imei)
6. go pm tab > super sd auth or pmm auth > than write good or modified pm ( must need pm 1 & 309)

7. erase pm again

8. Recover CERT ( go>imei and security tab> imei rebuild > recover cert)
9. give full factory reset