PVR 501 braindead

[kena999]

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PVR 501 dead.....doorstop?
I was trying to alter a flash2 in a 501, and Im not sure what happened, but jtags now recognizes the recvr model, but comes up blank on all other parameters. Is there any way to address the flash roms besides using jtags? It only delivers error messages and will not allow any programming. I am using a buffered jtag programmer and current jtag sftwr. I have backups of everything, but no way to get the programming started.

[skinerd]

What else did you do? Vid mod etc...........need more info to help you straighten that out.

[sukh77]

If the jtag requires batteries then try new battery. If that doesn't work Like skinerd said more info would be great. What is the error message you get in Jkeys? Did you short OJ1?

[zorlac]

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PVR 501 dead.....doorstop?
I was trying to alter a flash2 in a 501, and Im not sure what happened, but jtags now recognizes the recvr model, but comes up blank on all other parameters. Is there any way to address the flash roms besides using jtags? It only delivers error messages and will not allow any programming. I am using a buffered jtag programmer and current jtag sftwr. I have backups of everything, but no way to get the programming started.

You need to jump OJ1 in order to be able to erase and re-flash both chips. OJ1 is right next to a silver crystal near the hard drive cable. You'll see the label - follow the white line to the two pads. There's a picture of it around here somewhere...

I soldered two jumper pins from an old computer card, then used a standard jumper to short it for programming. When you're done, you can hang the jumper on just one pin for storage. Some people wire an external switch to it, but having a digital lock makes that really overkill.


1. Once you have OJ1 jumped, power on and launch jKeys. It will detect the receiver, but there will be bogus information for IRD#, etc.
2. Click on Flash Programming, then OK on the warning pop-up.
3. Erase FLASH 1, then re-write from backup.
4. Erase FLASH 2, then re-write from backup.
5. Exit flash programming, power cycle the receiver, and click on "detect" back on the main screen. The correct information for your receiver should now be showing. If not, go back to step 4 (or step 3) and try again. I had to do it about 3 times before it would take for some reason. Perhaps that's why I've seen people say "erase it three times"!

If you have the EEPROM saved, you'll want to restore that while you're in there too.

Now you can just let it stream update, or erase SA55 and SA60 on flash 2 and re-stream to force it to update. I did the erase and let it update from P221 to P226.

This is all assuming you are using a new version of jKeys. The names of the flash chips were changed in some older versions.


Don't forget to remove the OJ1 jumper after you're done. I also unplug the hard drive during the process, just to be safe.


It's an extremely wise investment to get a digital lock installed on that guy. The one from oddcircuits works beautifully and kept my recordings & timers intact after the latest ECM.

[kena999]

Thanks for the guidance....that OJ1 jumper was pretty buried in the forum data.....havent tried it yet, but that looks like the culprit. I was able to read the proms for backup purposes without the jumper....does the jumper disable the write protect or what?

[skinerd]

You need to jump OJ1 in order to be able to erase and re-flash both chips. OJ1 is right next to a silver crystal near the hard drive cable. You'll see the label - follow the white line to the two pads. There's a picture of it around here somewhere...

I soldered two jumper pins from an old computer card, then used a standard jumper to short it for programming. When you're done, you can hang the jumper on just one pin for storage. Some people wire an external switch to it, but having a digital lock makes that really overkill.


1. Once you have OJ1 jumped, power on and launch jKeys. It will detect the receiver, but there will be bogus information for IRD#, etc.
2. Click on Flash Programming, then OK on the warning pop-up.
3. Erase FLASH 1, then re-write from backup.
4. Erase FLASH 2, then re-write from backup.
5. Exit flash programming, power cycle the receiver, and click on "detect" back on the main screen. The correct information for your receiver should now be showing. If not, go back to step 4 (or step 3) and try again. I had to do it about 3 times before it would take for some reason. Perhaps that's why I've seen people say "erase it three times"!

If you have the EEPROM saved, you'll want to restore that while you're in there too.

Now you can just let it stream update, or erase SA55 and SA60 on flash 2 and re-stream to force it to update. I did the erase and let it update from P221 to P226.

This is all assuming you are using a new version of jKeys. The names of the flash chips were changed in some older versions.


Don't forget to remove the OJ1 jumper after you're done. I also unplug the hard drive during the process, just to be safe.


It's an extremely wise investment to get a digital lock installed on that guy. The one from oddcircuits works beautifully and kept my recordings & timers intact after the latest ECM.


There is absolutely no reason to reflash tsop 1, erase both, reflash 2 and 1 will take care of itself.

[sukh77]

Kena999 = you need to jump OJ1 to enable write to the TSOP. You can read tsop without jumping it.