Why do some devices get permanently bricked? Since no hardware is getting damaged while fiddling with the software, doesn’t it stand to reason that it can simply be fixed by reverting back to its original state?
In: Technology
> Why do some devices get permanently bricked [with] no hardware…getting damaged?
Often, non-hardware-based device failures are due to problems with the ROM or OS. Pretty much all computers have a ROM chip, which tells the computer what to do when it first starts.
> it can simply be fixed by reverting back to its original state?
Yes, it can. The problem is, it’s hard to do that if the device currently will not start to the point where it can be “told” to revert.
There are a couple solutions. If the OS has a bad problem, often you can use a software component that starts before the OS. (On the PC, this is the BIOS.) You can then re-install an OS from scratch, because the BIOS lets the computer start from an OS on an external device (like a USB drive, or for older PC’s, a CD-ROM or floppy disk).
If your device’s OS is kept on easily removable storage, you can take out the storage and repair it on a working device, or replace it with new storage containing a working OS. For example, you could take the hard drive out of a non-working PC and put it in a working PC (as a second hard drive), then use the working PC to fix the OS problem, then put the hard drive back in the problem PC. Or you could just replace the removed hard drive with a different hard drive that contains a working OS. The Raspberry Pi keeps its OS on an SD card, so you can do similar things with that system.
If the problem is in the ROM chip, rather than the OS, you will have a harder time. The ROM chip contains the very first software the device runs when it starts.
Basically, you’ll need to either remove and repair/replace the ROM chip, or attach some external device to various parts of the failed device’s circuit to make it run without a working ROM chip. Manufacturers don’t usually give out enough information for you to know how to make this work. It can also be physically challenging to disassemble the device and attach to where you need to.
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