Installed hwfly RP2040 boots into OFW

[rinain9]

Hello,
I've installed an HwFly RP2040 chip on my Mariko switch. I did everything as I should have done it, and when I turn on the Switch, the LED blinks blue, then yellow a bunch of times and the Switch boots into OFW. What does that mean? Here are some pics:

I used a multimeter to measure the resistance of both sides of the SP2 contact points and it reads 11.2 ohms.

Between the points of the pads of SP1 it reads 9.9 ohms.

Is this a poor soldering job, defective chip, or it needs flashing?

 

[mviper28]

Hello,
I've installed an HwFly RP2040 chip on my Mariko switch. I did everything as I should have done it, and when I turn on the Switch, the LED blinks blue, then yellow a bunch of times and the Switch boots into OFW. What does that mean? Here are some pics:
View attachment 408095
I used a multimeter to measure the resistance of both sides of the SP2 contact points and it reads 11.2 ohms.
View attachment 408096
Between the points of the pads of SP1 it reads 9.9 ohms.

Is this a poor soldering job, defective chip, or it needs flashing?

check error code (yellow blinks)

Error codes list (= is long pulse, * is short pulse):​

• = USB flashing done
• ** RST is not connected
• *= CMD is not connected
• =* D0 is not connected
• == CLK is not connected
• =** eMMC init failure during glitch process
• =*= CPU never reach BCT check, should not happen
• ==* CPU always reach BCT check (no glitch reaction, check mosfet)
• === Glitch attempt limit reached, cannot glitch
• =*** eMMC init failure
• =**= eMMC write failure - comparison failed
• == eMMC write failure - write failed
• =*== eMMC test failure - read failed
• ==** eMMC read failed during firmware update
• ==*= BCT copy failed - write failure
• ===* BCT copy failed - comparison failure
• ==== BCT copy failed - read failure

 

[rinain9]

check error code (yellow blinks)

Error codes list (= is long pulse, * is short pulse):​

• = USB flashing done
• ** RST is not connected
• *= CMD is not connected
• =* D0 is not connected
• == CLK is not connected
• =** eMMC init failure during glitch process
• =*= CPU never reach BCT check, should not happen
• ==* CPU always reach BCT check (no glitch reaction, check mosfet)
• === Glitch attempt limit reached, cannot glitch
• =*** eMMC init failure
• =**= eMMC write failure - comparison failed
• == eMMC write failure - write failed
• =*== eMMC test failure - read failed
• ==** eMMC read failed during firmware update
• ==*= BCT copy failed - write failure
• ===* BCT copy failed - comparison failure
• ==== BCT copy failed - read failure

Thank you for the provided info!
I'm getting long, long and short pulse (==* CPU always reach BCT check (no glitch reaction, check mosfet)) 3 times. This means I have to check the mosfet?

Where exactly is the mosfet (is it on the switch or on the rp2040 board?) and what do I have to check on it?

Post automatically merged: Dec 10, 2023

check error code (yellow blinks)

Error codes list (= is long pulse, * is short pulse):​

• = USB flashing done
• ** RST is not connected
• *= CMD is not connected
• =* D0 is not connected
• == CLK is not connected
• =** eMMC init failure during glitch process
• =*= CPU never reach BCT check, should not happen
• ==* CPU always reach BCT check (no glitch reaction, check mosfet)
• === Glitch attempt limit reached, cannot glitch
• =*** eMMC init failure
• =**= eMMC write failure - comparison failed
• == eMMC write failure - write failed
• =*== eMMC test failure - read failed
• ==** eMMC read failed during firmware update
• ==*= BCT copy failed - write failure
• ===* BCT copy failed - comparison failure
• ==== BCT copy failed - read failure

I just noticed too, after I shut down the Switch, after like 10 seconds after the switch has been turned off, the LED blinks blue and then long yellow, indicating USB flashing done? Is this normal?

Post automatically merged: Dec 10, 2023

EDIT: FIXED!
You have to tuck in the metal piece of the ribbon cable you are soldering on under the heatsink, or otherwise isolate it because there are elements under it that short out if you don't.

 

[mviper28]

Where exactly is the mosfet

it's in flex cable on apu

Post automatically merged: Dec 10, 2023

EDIT: FIXED!
You have to tuck in the metal piece of the ribbon cable you are soldering on under the heatsink, or otherwise isolate it because there are elements under it that short out if you don't.

that's the mosfets