Open Firmware Fixes Useless Onkyo AV Receivers
If you’ve been studying Hackaday for any size of time, you’ll know we love seeing hackers changing the inventory firmware on their units with open supply options. Usually that is performed as a result of the open firmware provides extra options, or lifts some arbitrary limitation. But if you end up installing OSIRIS on an Onkyo AV receiver such because the TX-NR717, it’s most likely since you’re making an attempt to carry the factor again to life.
As developer [Jokūbas] explains, sure Onkyo receivers that use the Texas Instruments D830 are identified to endure from a really particular failure — the gadget will energy on and seem practical, however no audio will come via. When this occurs, it’s both as a result of the D830 itself has failed or the 64 MiB NAND flash chip that holds the firmware it runs is cooked. Unfortunately, changing both part is a little more tough than you would possibly count on.
If you swap the D830 with a pin-compatible chip that’s simpler to search out and fewer vulnerable to failure, the inventory firmware gained’t boot. If you attempt to substitute the NAND, you’ll discover that the unique software program is just able to addressing 512-byte pages, whereas the flash you’ll discover available on the market right this moment makes use of 2 KiB or 4 KiB pages. In each circumstances, it’s ORISIS to the rescue.
The open firmware not solely helps D830 suitable chips such because the OMAP-L137, but it surely’s capable of tackle fashionable NAND flash, making the alternative of both or each part much more sensible. With contemporary {hardware} and the brand new firmware put in, your Onkyo receiver ought to spring again to life. That stated, ORIRIS isn’t function full but, and in truth the gadgets listed as untested or not applied on the function listing at the moment outnumber the entries for what really does work. But not less than it’s a begin.
Of course, not all of the burned out elements in your Onkyo receiver require a firmware flash to interchange. Sometimes a misbehaving unit just needs to have a few of its passive components replaced.
