EXACT PATCH WORDS
DSP address  File off  Old hex   New hex   Old float     New float
1181E8AC  016C40    3F7F41F2  3F7FEF9E   0.997099996   0.999750018
1181E8B0  016C44    3F7F41F2  3F7FEC57   0.997099996   0.999700010
1181E8B4  016C48    3F7F41F2  3F7FE910   0.997099996   0.999650002
1181E8B8  016C4C    3F7EB852  3F7FE5C9   0.995000005   0.999599993
1181E8BC  016C50    3F7EF9DB  3F7FE282   0.995999992   0.999549985
1181E8C0  016C54    3F7F1AA0  3F7FDF3B   0.996500015   0.999499977
1181E8C4  016C58    3F7F3B64  3F7FDBF5   0.996999979   0.999450028
1181E8C8  016C5C    3F7F5C29  3F7FD8AE   0.997500002   0.999400020
1181E8F4  016C88    3F51EB85  3F6B851F   0.819999993   0.920000017
1181E8F8  016C8C    3F3D70A3  3F5EB852   0.739999950   0.870000005
1181E8FC  016C90    3F28F5C2  3F51EB85   0.659999967   0.819999993
1181E900  016C94    3F1EB851  3F451EB8   0.619999945   0.769999981

SAFETY / TESTING
- Experimental, independently researched firmware; not Yaesu-authorized.
- FT-991A only. Do not flash on the original FT-991.
- Stable 13.8 V power; do not interrupt a firmware write.
- STOCK_ROLLBACK contains the byte-for-byte original DSP V01-12 image.
- Compare DNR OFF and DNR 1-15 on the same weak SSB/noise source.
- Restore stock immediately if audio becomes distorted, unstable, intermittent, or abnormal.
- This DSP package is completely separate from the proven MAIN full-TX unlock.

