By Pakistan's own unofficial admission, the technology transfer took place in 1990s in return of the instructions on enrichment methods for uranium[REF] Not much has been publicized as controversy surrounds the claim that North Korean nuclear efforts were well advanced before the instructions on enrichment methods uranium were provided [REF].
According to the Pakistani military reports, the original design of the missile was flawed and the missile's frontal conic nose section material burned up due to generated shock waves and hypersonic effect on re-entry during its first test flight in 1998 [REF].