I thought HP stated that 7.6.x was going to be the last version of SMH. Where did you find the 7.7 version?
Important:
Version 7.6.0 will be the last SMH release. Though SMH 7.6.0 will be available in Gen10 Snap1 SPP, but it will only support Gen 8 and Gen 9 servers. Any future patch releases will be available, only on SMH web page. Please refer to HPE SMH Release Notes
Thanks
NK