Un-brick Options:
-Try Maintenance mode first, but it works rarely to never. Press both the + and - buttons at warning screen, and hold them as you attempt to boot by hitting A.
-Zelda TP Autoboot IF you have TP hack AND Autoboot Supportive Chip installed. (works on 3.3)
-Zelda TP Autoboot IF you have TP hack AND no-Autoboot Chip installed AND a SaveMii Dongle (works on 3.3)
-Zelda TP Autoboot IF you have TP hack AND a SaveMii Dongle AND Autoboot Supportive Chip installed BUT brick causes freeze too early for standard autoboot to work. (works on 3.3)
-Zelda TP Official IF you have TP hack AND Starfall patches installed BUT no Chip. (works only on 3.2) [no cost!!!] *note: works because, unlike SaveMii, Starfall can autoboot non-autoboot discs, including retail copies
-AnyTitle Deleter/Wad Manager Disc Autoboot IF you have Autoboot Supportive Chip installed BUT no TP hack (works below 3.3)
-AnyTitle Deleter/Wad Manager Disc Autoboot IF you have a no-Autoboot Chip installed AND a SaveMii Dongle (works below 3.3) [most expensive]
-AnyTitle Deleter/Wad Manager Disc Autoboot IF you have SaveMii Dongle AND Autoboot Supportive Chip installed BUT no TP hack AND brick causes freeze too early for standard autoboot to work. (works below 3.3)
Until BootMii is released and you have it preinstalled,
there is no recovery from a banner brick
on a 3.3 with no twilight hack, even with a chip and SaveMii.
BootMii should allow you to recover ANY banner brick, on ANY current update (and probably future), because it looks for code to run from the SD slot before anything else, so you will not even need TP Hack or HBC at some point, except for the initial install, obviously.
And to answer the question posed about autoboot being a trucha feature, no, it is not a trucha-signed feature, so an autoboot Zelda TP works on 3.3, as I listed. An autoboot homebrew disc would be trucha-signed though, so unless you have TP hack installed, that won't help you.
Update: Corrected some info, forgot Starfall is a 3.2-only patcher. If you have 3.2, TP hack, and Starfall installed, you should always be pretty safe at zero cost.
-Try Maintenance mode first, but it works rarely to never. Press both the + and - buttons at warning screen, and hold them as you attempt to boot by hitting A.
-Zelda TP Autoboot IF you have TP hack AND Autoboot Supportive Chip installed. (works on 3.3)
-Zelda TP Autoboot IF you have TP hack AND no-Autoboot Chip installed AND a SaveMii Dongle (works on 3.3)
-Zelda TP Autoboot IF you have TP hack AND a SaveMii Dongle AND Autoboot Supportive Chip installed BUT brick causes freeze too early for standard autoboot to work. (works on 3.3)
-Zelda TP Official IF you have TP hack AND Starfall patches installed BUT no Chip. (works only on 3.2) [no cost!!!] *note: works because, unlike SaveMii, Starfall can autoboot non-autoboot discs, including retail copies
-AnyTitle Deleter/Wad Manager Disc Autoboot IF you have Autoboot Supportive Chip installed BUT no TP hack (works below 3.3)
-AnyTitle Deleter/Wad Manager Disc Autoboot IF you have a no-Autoboot Chip installed AND a SaveMii Dongle (works below 3.3) [most expensive]
-AnyTitle Deleter/Wad Manager Disc Autoboot IF you have SaveMii Dongle AND Autoboot Supportive Chip installed BUT no TP hack AND brick causes freeze too early for standard autoboot to work. (works below 3.3)
Until BootMii is released and you have it preinstalled,
there is no recovery from a banner brick
on a 3.3 with no twilight hack, even with a chip and SaveMii.
BootMii should allow you to recover ANY banner brick, on ANY current update (and probably future), because it looks for code to run from the SD slot before anything else, so you will not even need TP Hack or HBC at some point, except for the initial install, obviously.
And to answer the question posed about autoboot being a trucha feature, no, it is not a trucha-signed feature, so an autoboot Zelda TP works on 3.3, as I listed. An autoboot homebrew disc would be trucha-signed though, so unless you have TP hack installed, that won't help you.
Update: Corrected some info, forgot Starfall is a 3.2-only patcher. If you have 3.2, TP hack, and Starfall installed, you should always be pretty safe at zero cost.