I can't tell you which models, but once they go into an error code the Settings Menu may become inaccessible. And if you replace the printhead while...
I used Transcend Jet flash and still use them occasionally but switched to another don't remember brand but it's short about an inch like and doesn't...
I would suggest to not let it do firmware with the finisher attached. It could work like the FS534 working instead of the FS536 on the 8 series but
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