If there's any question or need assistance from us on the upgrade, please feel free to contact us at our support team will follow up and reply you ASAP. PC Software: > pronterface-windows> Bracket> For LK1(U20)> For LK1 Plus(U20 Plus)> For LK4(U30)> For LK4 PRO(U30 Pro)> For LK5 PRO<<
![local store with usb parallel printer cable local store with usb parallel printer cable](https://i.ebayimg.com/images/i/182275465916-0-1/s-l1000.jpg)
Replacewith new START GCODE(in appendix section) in your slicer software(Cura, Slic3r, Simplif圓D, ).Send G1 F60 Z0 to test if Z axis could back to the actual Z origin by checking the clearance between bed and nozzle if is about 1 mm (thickness of a sheet of paper).Send M211 S1 to re-activate software endstop function.Send M851 Z x.x to set z-offset(x.x is the value of previous value).Send M114 to get current Z height value(usually negative). the value is the z-offset.Put a sheet of paper on the bed and use the pronterface to lower the nozzle 1mm by 1mm then 0.1mm by 0.1mm until you feel a friction on the sheet of paper (the paper is not to be jammed but not too free either). Then remove the sheet.Send M211 S0 to inactivate software endstop function.After connecting the printer to your computer using a parallel cable, you need to change the properties of the printer to print to the 'LPT' port. If your printer contains a parallel port connection, purchase a 'parallel cable' from your local retail store or from the printer manufacturer. Send G1 F60 Z0 to lower Z axis to the software origin &0183 &32 Printer with USB and parallel connections.and connect to printer Adjusting z-offset.
LOCAL STORE WITH USB PARALLEL PRINTER CABLE SERIAL
Open pronterface software, select serial port(115200 baudrate).
![local store with usb parallel printer cable local store with usb parallel printer cable](https://i5.walmartimages.com/asr/861636ff-c1da-4d10-8b55-0ba8bc9df847_1.fed3b064f4035a774dd4d4e624b2039b.jpeg)
![local store with usb parallel printer cable local store with usb parallel printer cable](https://i2.wp.com/www.devicestech.co.ke/wp-content/uploads/2019/02/usb-to-parallel-adapter.jpg)