[HOWTO] flash your jalapeno to 8+ ghs

[vapourminer]

How thick was the original thermal pad used by BFL on Jalapeno? 0.5...1 mm?

not sure, my tape fell apart as soon as I removed the heatsink 

dont think it makes a difference as it doesnt need to match the height to anything. FWIW the tape was pretty thin, thinner than the heat tape on the VRM s on my GTX285's (used for folding @ home, not mining).

Right, I intend to reflash also, but not until I have the thermal pads in hand.
I tried to find out what are the characteristics of thermal pads used by BFL, and so far there is a post by Kano (on BFL forum) mentioning 14.0 W/mK.

So I suppose something like this will do: http://www.frozencpu.com/products/17499/thr-181/Fujipoly_Ultra_Extreme_System_Builder_Thermal_Pad_-_60_x_50_x_05_-_Thermal_Conductivity_170_WmK.html

if it works out let me know, Ill put the link (with a thanks) into the OP as a "known OK" solution.

I should grab some myself, right now mine has pieces of the original tape with artic cooling MX2 filling in the gaps

[kano]

OK ... a few things about this that some may not have realised ...

Firstly, old reports suggest that if your USB power is a bit low, it can kill the AVR Dragon.
I used a USB2 powered hub.

Secondly, don't do it how the first image is shown.
Remove it from the box - the black padding is apparently not a complete insulator ...

Lastly, since you install Atmel Studio 6 you may as well compile it yourself, it only takes one menu click ...

My version

https://bitcointalk.org/index.php?topic=236875.msg2591760#msg2591760

[viriat0]

Good work! Following.

[vapourminer]

OK ... a few things about this that some may not have realised ...

Firstly, old reports suggest that if your USB power is a bit low, it can kill the AVR Dragon.
I used a USB2 powered hub.

Secondly, don't do it how the first image is shown.
Remove it from the box - the black padding is apparently not a complete insulator ...

Lastly, since you install Atmel Studio 6 you may as well compile it yourself, it only takes one menu click ...

My version

https://bitcointalk.org/index.php?topic=236875.msg2591760#msg2591760

the black antistatic pads were not in the box for this, and many people cut the side of the box so the USB cable can come out the side and just run it in the box good point though, Ill update the OP for those who dont know how antistatic pads work (ie by being a mild conductor).

I did try to compile it, it compiled with no errors but did not run after flashing it.. the front LED on the jally just did a fast blink. did you change the source code at all? (I didnt)

[jelin1984]

9.8 ghz from 5ghz jalapeños these is hugeeeeeeeeee updated

[kano]

...
I did try to compile it, it compiled with no errors but did not run after flashing it.. the front LED on the jally just did a fast blink. did you change the source code at all? (I didnt)

The only change I made was to add my name ...
FIRMWARE: 1.2.5kano

[Silv0r]

So it would be possible to make a ~11.3 GH/s miner out of a 7GH/s Jalapeno with the right cooling, etc.? (factor ~1.5x)

Greetings,

Silv0r

[erk]

So it would be possible to make a ~11.3 GH/s miner out of a 7GH/s Jalapeno with the right cooling, etc.? (factor ~1.5x)

Greetings,

Silv0r

Of course not.

[tom99]

Anyone know if this avr jtag will work http://www.ebay.ca/itm/AVR-JTAG-USB-emulator-Debugger-download-AVR-JTAG-ICE-Download-Programmer-atmega-/200908327724?pt=LH_DefaultDomain_0&hash=item2ec711cb2c

[Silv0r]

You can overclock the 5GH/s chip but can't do this with the 2 GH/s upgrade chip? For me it's not self-evident.

[aboron]

You can overclock the 5GH/s chip but can't do this with the 2 GH/s upgrade chip? For me it's not self-evident.

The 5 and 7 GH/s models use the exact same chips, just the $100 upgraded version is pre-overclocked for you a little bit.  The upper maximum is still going to be the same.

[tom99]

you still can get some from OC 7gh/s but wont get much of out 7Gh/s than 5Gh/s to ??+ and depend grade chip A to D.

[philips]

You can overclock the 5GH/s chip but can't do this with the 2 GH/s upgrade chip? For me it's not self-evident.

The 5 and 7 GH/s models use the exact same chips, just the $100 upgraded version is pre-overclocked for you a little bit.  The upper maximum is still going to be the same.

We don't know that for sure. According to Josh a 7GH Jalapeno is using higher grade (binned) chips, so it might be possible to overclock a 7GH version a bit higher.

OTOH, other the above mentioned statement from Josh (made in the Shoutbox) I never saw any confirmation anywhere else.

[Flashman]

gonna be fun to see all those "help my jala is not working anymore" threads.

Sure is...

Buying bricked jallies, 0.2 BTC

[kano]

gonna be fun to see all those "help my jala is not working anymore" threads.

Sure is...

Buying bricked jallies, 0.2 BTC

Yes please - everyone send me your bricked Jalas - I'll pay 0.2BTC + 0.1BTC shipping

[Silv0r]

gonna be fun to see all those "help my jala is not working anymore" threads.

Sure is...

Buying bricked jallies, 0.2 BTC

Yes please - everyone send me your bricked Jalas - I'll pay 0.2BTC + 0.1BTC shipping

I pay 0.1 more than kano Every time! Would be fun to try unbricking the jalas

[MrTeal]

Nice results. Did you monitor power consumption before and after?

[gmannn]

I have the programmer and cables on order.  If you want to flash your jalapenos in the LA area, contact me and you can use my equipment.

[Foofighter]

Good work! Following!

+1

[kano]

gonna be fun to see all those "help my jala is not working anymore" threads.

Sure is...

Buying bricked jallies, 0.2 BTC

Yes please - everyone send me your bricked Jalas - I'll pay 0.2BTC + 0.1BTC shipping

I pay 0.1 more than kano Every time! Would be fun to try unbricking the jalas

Yes I was joking

You'd probably just need to erase the chip and reprogram it.