Hi everyone -thanks a lot for the efforts in helping me out! I was able to solve the problem and re-flash the BIOS so I wanted to leave here the method in case anyone else encounters the same issue when upgrading to 0.7x and bricking the ZX-Uno.antoniovillena escribió:Hi chilo. Connect a joystick and try to upgrade new core (or old firmware) from BIOS. To enter BIOS press joystick down during splash screen. Then, in the core boot menu select last option (Enter Setup). And the go to the Upgrade menu and desired option.chilo escribió:Hello. New user here. I've updated to bios 0.72 downloaded from the official 'descargas' link, however at that moment i had seen no warning that the core had to be upgraded simultaneously.
After the bios update, the device boots ok to the command prompt however keyboard is non responsive (using rubber keyboard with zxuno xl inside inside a spectrum case). If i press any key during boot to try enter bios setup, the boot process freezes.
Would it work if I get hold of a ps\2 keyboard? Any suggestions to access the bios and reflash? Thanks!!
Replies in Spanish are ok too
If that doesn't work, try the unbrick method on this guide:
First, let me state I was unable to use the recovery process and load the firmware via TAP (this may be a problem with my own ZX-Uno ear port, since even in normal work mode I seem to not get a signal through either audio jack)
What I did is went back to Antonio's method of booting with a joystick pressing DOWN during splash screen and DON'T TOUCH ANY KEY on the keyboard. Pressing the cursor keys was what made the computer freeze. So, navigate the options down just with teh joystick and perss fire over the "Enter Setup" option. From there, also with joystick move to teh side up to the Upgrade option (press fire) and in there choose the Upgrade BIOS option , always moving and selecting with the joystick. With a BIOS 0.63 in teh SD card, BIOS 'downgrade' was easy and now I'm up and running again on a 0.63 BIOS.