##Problem
We found an insidious DDR2 RAM memory problem on the very first AriaG25-256 modules made by Acme Systems
##Solution
If your board already has the patch wire shown below the problem was already solved by us before shipment.
After the very first modules we send just board with the problem fixed on the PCB.
If your board has not the patch wire it could be affected by a memory fault problem highlighted
only using the [memtester](http://linux.die.net/man/8/memtester) utility.
According to our test this issue does not affect the AriaG25-128 boards:
* [Aria models](./ariamodels)
To highlight the problem install memtester on your AriaG25-256:
On the next production batch planned for october we'll eliminate this patch wire fixing the PCB.
If your board has not the patch wire it could be affected by a memory fault problem highlighted
only using the [memtester](http://linux.die.net/man/8/memtester) utility.
According to our test this issue does not affect the AriaG25-128 boards:
* [Aria models](./ariamodels)
To highlight the problem install memtester on your AriaG25-256:
# apt-get install memtesterThen lauch:
# memtester 1MIf your board fails one or more benchmarks you need to place the patch wire to avoid them. The two points to wire are the follow:
On the next production batch planned for october we'll eliminate this patch wire fixing the PCB.