2 M 5 M > 9 > j M > 9 > j M H > A1 > j 214 M > j 214 S ~ 7 S 3 S > j H > j 236 M > (land) > dl 5 L L L > 236 S ~ [ 7 ] 3 S > 236 H + S
Works the same in v1.21, but with less damage on spirit bomb. Only use if you have excess meter but not assists to kill a character, as the spirit bomb no longer causes hard knockdown either.
(notation for reverse kame + spirit bomb is as if you never changed sides, for more clarity)
Alternate corner route for some unusual assists that can't otherwise enable 5 L L L spirit bomb routes. For the shown Kid Buu A assist, press A1 with jH. Remember, reverse kamehameha's first hit does not require an additional S input, simply holding 7 after the initial 214s input will cause the first reverse kame to come out in the correct direction ASAP.