Just install the 4.1.x image, run this workaround Updates may fail because "Repository [...] changed its 'Suite' value from 'stable' to 'oldstable'", upgrade and you’ll be fine in 4.3.x
Just install the 4.1.x image, run this workaround Updates may fail because "Repository [...] changed its 'Suite' value from 'stable' to 'oldstable'", upgrade and you’ll be fine in 4.3.x