I know this is just going to necro an old thread, but this advice worked perfectly on my enclosure. It was several years old, and I couldn't get it to flash. It had a different chip number , 05424C. Thankfully not an A. The board was labeled ME-835U2F v1.2, which pulls up Bytec enclosures that looks nothing like it. (Still might be an older Bytec.) There's a PMC PM39LV010 flash chip on there, so I knew I wasn't completely sunk.
Looking at the board, there just happened to be a zero ohm resistor labeled R72. Rather than be careful, I just popped it off with a putty knife and hoped for the best. Worst case scenario, I rationalize purchasing a SATA drive to put inside my machine. (I'm not going to think about any other worst case scenarios. ). I put it back together, and tried the flasher again. It worked!
If anyone else has trouble with this, and doesn't care if their enclosure is trashed (or worse?) then give this a shot.