As you all see , supported are :
1000 for free key (need for dump for A2)
100 credits:
-DB2000: K600, K608, V600, V800, W900, Z800, Z1010
-DB201X: J300, F500, K310, K310, K320, K500, K508, K510, K700, K750, S700, W200, W300, W310, W550, W600, W700, W800, W810, Z520, Z525, Z530, Z550
-DB2020: K530, K550, K610, K618, K770, K790, K800, K810, S500, T650, V630, W580, W610, W660, W710, W830, W850, W880, W888, Z610, Z710
100 credits:
-DB3150: C702, C902, G502, K630, K660, K850, K858, T700, TM506, V640, W595, W760, W890, W902, W908, W910, W980, Z750, Z770, Z780
-DB3200: F100, J105, T707, W508, W518
-DB3210: C510, C901, C903, C905, G705, TM715, W705, W715, W995
-DB3350: U10, U100, X5
as you all can see in NEROKey exe credits for supported phones are described correctly, just see on picture:
For New DB, CIDs etc, is prepared Upload New Key button.
Also remember, that there are initial credits, we will see in future, how it will be.