Rebreather World - View Single Post - Smithers(-Juergensen) electronics for Meg units

***jradomski*** · 17th January 2007, 08:16

Quote: (Originally Posted by webhead)

Can't answer any of Phi's questions but I'd also like to let everyone know that if they have a Smither's head for the Meg, I'd be interested in a purchase.

I wonder if there is any way to reverse engineer the head to find the trimix codes. If there is a way to pull the code from flash, maybe run it thru a debugger/disassembler.....

most older PIC processors are not that difficult to pop the security bits and read out the code.. The problem is that the process is destructive and takes multiple tries to get it done.. So with 1 processor the liklihood is low, but with 10 its very high...

17th January 2007, 08:16	#3 (permalink)
*jradomski* Moderator Current Rebreather/s: Inspiration Classic Sport Kiss Optima rEvo Other CCR Other Rebreather/s: Inspiration Vision Evolution Megalodon Classic Kiss rEvo Other CCR Join Date: Mar 2005 Location: "Da" Bronx Posts: 3,093	Re: Smithers(-Juergensen) electronics for Meg units Quote: (Originally Posted by webhead) Can't answer any of Phi's questions but I'd also like to let everyone know that if they have a Smither's head for the Meg, I'd be interested in a purchase. I wonder if there is any way to reverse engineer the head to find the trimix codes. If there is a way to pull the code from flash, maybe run it thru a debugger/disassembler..... most older PIC processors are not that difficult to pop the security bits and read out the code.. The problem is that the process is destructive and takes multiple tries to get it done.. So with 1 processor the liklihood is low, but with 10 its very high... __________________ Joe Radomski CCR Trimix Instructor Trainer ANDI Instructor Trainer Director #10 All posts are personal opinions and DO NOT reflect any affiliated agency unless specifically stated.
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