These identifiers refer to the "brain" of your USB flash drive. SSS6698-BA

Li Wei located the ancient v2.173 tool on a German data recovery site. It looked like a Windows 98 relic—gray buttons, broken English. But he knew the ritual:

The SSS6698-BA pretends to be dual-channel but often has only one data line connected on cheap PCBs. In the tool settings, force "Channel = 1" (Single channel). If you leave it on "Auto" or "2," the tool will hang at Pretest 3% or Check ISP 50% .

The string "tc58nc6623 sss6698-ba mptool" suggests you are looking for the specific production tool for this controller-memory pairing.