In this case it might just mean an upgraded Shturm/Ataka guidance transmitter that allows the use of Krisantema, rather than a mast mounted radar system.
Of course if they have successfully designed a mast mounted radar system that works there is no reason not to put it on Hinds as well as Havocs.
There was already a project for equipping Mi-24's with Fire Control Radar of the type Scorpion an ukrainian made radar in MMW-bandwith with about 5km effective classification and guidance by year 1988/89 and in same year funds were stopped through cuts.
Download the 3.8 mb file of their products and on page 8 of the modernisation of Cobra and Ataka missiles through miniature radio guidance command to page-10 describes:
ENTERPRISEFrom the early eighties the LRERI began to work on creation of the millimeter-wave band (MMW) radar aids designed for search, detection and high-precision measurement of coordinates of ground targets as a component of ground and onboard weapon complexes; navigation safety control of ground aids, helicopters, sea and river vessels, ballistic preparation fire support.These aids expand the high-precision weapon combat capabilities by:all-day and all-weather application unlike the optical and infra-red band aids high security and noise immunity unlike the RF longer-wavelength means small dimensions and weight of the equipment, allowing to install it on carriers of all classes (ground vehicles, airborne and missile, ammunition)Integration with optical and infrared band means.
ENTERPRISEThe Institute has developed production of the MMW short wavelength (SW) radar equipment. To this end:wide co-operation of developers and manufacturers of base components and metrological support has been created widespread investigations of the characteristics of the ground target and background radar portraits for the radar equipment construction optimization have been carried out principles of construction and technology of solid-state coherent pulse, pulse and Doppler radars and their components (antenna-feeder devices, transceiver paths, signal and control processor modules) have been developed large-size anechoic chamber (AEC) for developing the MMW radars and their components (50 х12 х8 m) has been created and equipped.
Further on page 16:
ENTERPRISEThe LRERI developments for the last years are as follows: creation of the prototype of the small-base passive complex for space radio monitoring and positioning of radio-frequency radiation sources of air and ground objects and the MMW radar-seeker for the aircraft air-to-surface missiles.
Page 61 has pictures of the "miniature radio command link for anti-tank complexes" and on Page 62 you see it is the Mi-28 Ataka radio command link aswell the recievers for ATGM's launched from various vehicles.
So indeed what you've suggested this LRERI radars like scorpion version for Hinds were also intented for radar guided missiles
This data file contains also few informations about radar self-guided ammunition such as 120mm Mortars (page 38) and Shtora and Arena sensoring and radars. (page 87-102) there are lot of other products described for all who are interested.
Keep in mind that attack helos have gone for decades without radars and even the US did not fit Longbow radars to all AH-64D Longbow Apache helos because of the cost.... and the fact that they didn't actually all need them.
And on page 68 starting the MMW radar prototypes, it doesn't give lot of information about the specific MMW radars which were during that state under tests,however i personally doubt the MMW radar such of version scorpion were mast-mounded radars,since Hinds would had during 88/89 hard time to proper functional through non composite blades, which also were reason why Apaches had mostly used Laser guided Hellfires rather than FCR, through reliability issues which were unsolved till 2012/13 same goes for Arbalet for Mi-28N.
It just makes sense for them to transfer all the new stuff they have developed for the Mi-28N and Mi-28NM to the older helos as it increases production numbers, improves commonality and training and maintainence issues and also increases performance.
I also think it's mostly more effecient to further upgrade existing Hinds with new technologies, they are by far better plattforms for upgrades than the most helicopters and there is always room for special equipment or for reduction of weight through more modern materials like they did with VM/PM models from prior models reducing weight about 1-1.2tones empty weight.
BTW has anyone got any footage of a Hind firing its chin turret mounted twin 23mm gun?
Unfortunatley, i couldn't find much.
PS: Don't know what went wrong by first post tried to edit it and came twice to a double post...