I think the best thing to do here is to flash the latest boot1 to the slc, and then let it fix the seeprom. you would need to have that otp on the sd though. PRSHhax should work after that
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this should be the latest version of boot1. you would just copy the BOOT1_SLC.RAW and restore it...
your boot1 version is v8339, which is really old. i bet iosu is also really old, so udpih not working makes sense
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i just checked, this wiiu is running somewhere around 3.0.0!
try putting the otp.bin from here onto the sd root, dump the otp and seeprom in minute, and then send the decrypted seeprom
delete this otp after dumping the seeprom. booting iosu with the wrong otp can be dangerous
150 indicates theres something wrong with the FS. removing the USB drive may help, but it probably wont.
If it doesnt change anything, go to Backup and Restore -> dump crashlogs from slc, compress the dumped logs, and then post them here.
Ive just updated the guide on where to get support, because I am not very active here.
I am in the process of trying to get those errors to not happen anymore. If you can wait a little bit, I may have a build that should patch out any "access" checks.
Do you have the mini radiator cooler? I Jerry rigged a heatsink and 5volt fan from a dead graphics card on mine, but eventually wanna get a real cooler/fan.
My 1500ish games is all hand picked and scraped it's taken me months but zero trash well except MAME.... Tried deleting clones and broke the originals uugghh