Rockbox Development > New Ports
Creative Zen Vision:M
Couch:
After every firmware update the hash of the firmware image must change, correct?. So how does the firmware on chip inside the player recognize the changed hash?
I'm thinking the firmware updater software may tell the firmware on chip what the new hash is. [if so we can just patch the update software with the chksum of hacked image?]
This is just a hypothesis without any disassembly so take it with a grain of salt.
saratoga:
--- Quote from: Couch on May 06, 2007, 09:42:05 PM ---After every firmware update the hash of the firmware image must change, correct?. So how does the firmware on chip inside the player recognize the changed hash?
--- End quote ---
The hash is stored in firmware update and checked when you do the update.
--- Quote from: Couch on May 06, 2007, 09:42:05 PM ---I'm thinking the firmware updater software may tell the firmware on chip what the new hash is. [if so we can just patch the update software with the chksum of hacked image?]
--- End quote ---
"Just" doing that is what the last 8 pages of this thread have discussed. If you're interested, you might want to read the thread.
Couch:
--- Quote from: saratoga on May 06, 2007, 09:50:39 PM ---
--- Quote from: Couch on May 06, 2007, 09:42:05 PM ---After every firmware update the hash of the firmware image must change, correct?. So how does the firmware on chip inside the player recognize the changed hash?
--- End quote ---
The hash is stored in firmware update and checked when you do the update.
--- Quote from: Couch on May 06, 2007, 09:42:05 PM ---I'm thinking the firmware updater software may tell the firmware on chip what the new hash is. [if so we can just patch the update software with the chksum of hacked image?]
--- End quote ---
"Just" doing that is what the last 8 pages of this thread have discussed. If you're interested, you might want to read the thread.
--- End quote ---
I apologize for my ignorance. I only skimmed through a few of the last pages and just felt like presenting my idea.
saratoga:
I understand that this thread has become somewhat bloated and difficult to find information in. However, i'm somewhat hesitant to edit it too heavily for fear of deleting relevant information. Unfortunately, that means people are going to have to dig to find stuff. It also means I'll probably be deleting offtopic posts without warning.
iSE:
What about updating the wiki? Keeping all the discussed ideas there so people can first check that?
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