[monster9]

Hi All,
I bought a jetbook from newegg.com serveral days ago. it came with firmware
v0.34c patch 15. I tried to update firmware to chinese version but no luck. here's what I did

1. from the hardware information reported by self-test, it should be M218A++. so I try M218A++ v27 first. it can detect the firmware package, ask me really wanna upgrade or not, that's good, I press 'ok' to proceed. it start to copy file.then later it said firmware update failed, can not find the files needed on sd card or internal momory.
2. maybe it just doesn't like M218A++? so I tried M218A+, this time it pop up a different message, wrong firmware, please use M218B.
3. good, I upload M218B v49 to sd card, this time it never ask me to update firmware or not but display "firmware update failed......" directly(same message in step 1).
4. interest, I saw ppl in this forum upgrade to M218B v44 successfully, so I gave v44 a try, guess what, It acts differet as v47, but show exactly sequence and message as step 1(M218A++ v27)
5. what's hell, maybe jetbook add some check to v34c, so I went to jetbook.net and download v33g to sd card, downgrade from v34 to v33 should be ok, right ? Nope, same symptom as step 1 and step 4.

I got an jetbook that is non-upgradable !!!

so I went to self-test and check items one by one, spotted something that abnormal, the NOR checksum is not correct, everything else are ok other than that.

No idea about what's going on. Any suggestion/pointer/hint/clue are welcome.

Thanks.