A small trick to program SPI flash on board.
-
- Junior Member
- Posts: 8680
- Joined: Mon Jul 18, 2005 9:33 pm
A small trick to program SPI flash on board.
I remember older days people trying to raise the voltage to get flash detected. What I found during programming HT802 is the other way around. I need to lower the voltage to give SPI enough power but not enough for the CPU to be operational.
I explained why in latter video.
I will create a separate video unlocking Vonage HT802 voip box.
-
- Junior Member
- Posts: 21
- Joined: Wed Feb 12, 2020 2:46 am
- Location: Northwest US
- Contact:
Re: A small trick to program SPI flash on board.
There are a few old tricks that work, my choice is if JTAG, the 0rocessor is already initialized with very efficient SPI reading and writing to EPROM or e2prom.
Someone posted a means of bypassing the CPU and tapping the 4 wire directly, that can be made to work.
Someone posted a means of bypassing the CPU and tapping the 4 wire directly, that can be made to work.
Some of my information may be incorrect, incomplete,or just plain wrong. Seems I am human. 

-
- Junior Member
- Posts: 8680
- Joined: Mon Jul 18, 2005 9:33 pm
Who is online
Users browsing this forum: No registered users and 4 guests