And if it does, solutions might not be readily available, except if someone has already done that specifically for your device. It's not very likely for RAM on embedded systems to get defective.
This might not be a direct solution to your problem, but I'm sharing my thoughts on it.
How to leave them out? It is a ARMv7 device. UPDATE: After analyzing a lot of crash reports, seg faults and memory corruptions I am pretty sure that the unusable ram is from address 0xb6000000 to
