when i put in the usb it says no valid image detected

[squeakydoorhinge]

Describe the bug
when i put in the usb it says no valid image detected

To Reproduce
Steps to reproduce the behavior:

1. Flash usb stick with balena etcher
2. esc + refresh + power on chromebook, then ctrl d, then esc + refresh + power again
3. plug in usb
4. chromebook displays "no valid image detected"

Expected behavior
chromebook to immediatly boot into sh1mboot usb stick

Target Chrome OS Device

• nissa
• uldren
• Shimboot version 1.2.1
• using prebuilt nissa image

tried with multiple usb sticks

[Clone-trooper-9904]

did you try putting it in before?

[squeakydoorhinge]

do you mean
did i put in the usb after the first esc + refresh + power?
then no
please elaborate

[TheTruePerson]

try doing this
esc-refresh-power
ctrl-d
enter
do esc-refresh-power again before the next screen pops up
plug in usb

[squeakydoorhinge]

i tried that, and still same result

[TheTruePerson]

When you're in the place where you would normally put in your usb, press ctrl+d. Are you in developer mode?

[squeakydoorhinge]

yes, it says 'developer mode is already turned on'

[TheTruePerson]

try loading up a normal recovery image from chrome100.dev those do have chromeos recovery images, which will pinpoint if it's an issue with shimboot or how you're flashing it

[Fighterhen63]

@squeakydoorhinge Can you press power and refresh and then click tab and send a picture of that screen. Thanks!

[squeakydoorhinge]

[squeakydoorhinge]

try loading up a normal recovery image from chrome100.dev those do have chromeos recovery images, which will pinpoint if it's an issue with shimboot or how you're flashing it

it let me use a normal recovery image just fine

[es-j3]

Build it yourself, then. Check your USB integrity, I had a shimboot USB that didn't work because it was defective.

[squeakydoorhinge]

built the image on ubuntu with the nissa rma shim from https://dl.diffusehyperion.com/api/raw/?path=/rma/nissa.zip
and used the recovery image from https://dl.google.com/dl/edgedl/chromeos/recovery/chromeos_16033.58.0_nissa_recovery_stable-channel_mp-v32.bin.zip
and still same result
i've used this usb stick many times with ventoy so im sure that the integrity is fine
exact model of my usb stick > https://www.amazon.com/dp/B07BPG9YX9?ref=ppx_yo2ov_dt_b_fed_asin_title&th=1

[ading2210]

Does the original RMA shim boot? If not, then your Chromebook's read-only firmware doesn't have the keys needed to boot the modified shims and thus shimboot cannot possibly work.

[squeakydoorhinge]

sadly i might be all out of luck. the rma shim showed the same thing
it's a dell chromebook 3120 and i looked on dell's website to shim it but there was nothing