I have successfully performed storage migration on standalone chain. But how to do this for parachain ? Like, How/what wasm should be upload of new version and Where Should I upload ? Is there any different process from standalone to do this ?

If I'm simply upload the upgraded wasm, the blocks remains finalising but sudo.sudoUncheckedWeight ready : enter image description here this process will not complete. Can anyone please help me to solve this problem ?

Thanks in advance !!

2 Answers 2


I have solved this issue by using compact.compressed wasm.


what you want to do is use the sudo tab, then sudo > setCode(WithoutChecks)

  • Nothing Happen!, Same issue will occur even doing with setCode(WithoutChecks) Commented Jul 9, 2022 at 10:57
  • no, use the setCodeWithoutChecks function
    – flipchan
    Commented Jul 12, 2022 at 16:43

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