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TMS320C6748: How to downgrade CCS5.4 to use BIOS 5.41.04.18

Part Number: TMS320C6748

I’m trying to reproduce a build setup for a legacy project. The project is built with BIOS 5.41.04.18 and C6x codegen v7.4.24 and we are using CCSv5.4.

I have installed CCSv5.4 which has BIOS 5.42 by default and I’m trying to figure out how to downgrade it to BIOS 5.41. I have installed BIOS 5.41.04.18 on my PC from here, but CCSv5.4 doesn’t know about it and I don’t know how manually force CCS to use that version. I noted that the BIOS download page only has CCSv3 and CCSv4 installers for that version, but somehow my colleagues got this to work in CCSv5.4.