Originally Posted by
rcflyertim
There is a work around for this but requires a lot of computer chip experience with flashing software. So what can the average joe do if he has crashed his TX and did no make a backup of the original firmware? Unfortunately, the files are not open source which means you can not get spectrum to show you the architecture and software file.
The "workaround" is "write your own bootloader and application code." There isn't another option.
The average Joe has a very easy solution - send it to Horizon's Service department. They'll take great care of you.
There isn't a need to keep a copy of the previous code - you can download a copy from your account and flash it in. Or you can flash the current version in. It's pretty simple.
This is because the system is very good at protecting itself from damage. You can't brick the radio with a bad update. You just restart the update if you did something like unplugging the battery midway through.
I'm getting the feeling that you don't really understand how our system works.
1. Buy a junk radio of like kind (maybe one with broken gimbals or case or the switches are broken off) and use the motherboard off that unit and rebuild with necessary components from your good unit. The junk TX will have to be a working processor in order to retrieve the info needed. If not, your going to be right back where you started
Better yet - send both radios in and Horizon will fix them up for you. Usually free of charge...
2. Do a hard reset ( each unit is different) but usually starts with pressing and holding certain buttons while turning on and then flipping a ombination of toggle switches several times. I have been successfull doing this on a DX7 and a JR 9503 both of which were brick units when I received them. It would be nice if some spectrum guru with firmware could make a file showing the combination of sequences to get to the root menu for each unit.
Well, I'm the Spektrum Guru. I wrote nearly all of the 250K lines of code in the transmitter. There is no "hard reset" function available in any of the Airware radios. Save yourself time, money, frustration - send it in for our Service guys to fix up.
Andy