My understanding is that you have had two separate problems so far:Trying to use the Upload command to upload via an ISP programmer.Trying to do a serial upload after you erased the bootloader via Upload Using Programmer.There has not been anything done that would change either of those issues in all the years I've worked with Arduino.The easiest way to work with the Pro Mini is to buy a USB to TTL serial adapter board or cable that plugs right into the 1x6 header that's along one of the short edges of the Pro Mini. The Pro Mini comes with the bootloader installed so you can just plug in the adapter and hit Upload. You can buy the USB to TTL serial adapter boards on eBay for $1.28 USD w/ free shipping from China. They're also a really useful tool to have on hand. It's well worth spending $1.28 to save all the hassle and wasted time of trying to use an Arduino as ISP or a jerry rigged Uno to upload. I like these ones:https://www.ebay.com/itm/382715233411
So I went on ebay and bought the module you posted. I have a couple of those already but none with the ftdi chip. The two I have use the CH340G and probably clone Prolific chips. They do not work for me. I can't figure out why but I think the drivers are for genuine chips and not clone chips.Anyway I ordered the one you posted and another with the FTDI chip that ships a bit faster.I will wait for them to arrive and try them out. I'll post back with my results.Thanks.
I have a couple of those already but none with the ftdi chip. The two I have use the CH340G and probably clone Prolific chips. They do not work for me.
I think the drivers are for genuine chips and not clone chips.
do you reset the mini right before upload to activate the bootloader?
Sketch uses 2944 bytes (9%) of program storage space. Maximum is 30720 bytes.Global variables use 271 bytes (13%) of dynamic memory, leaving 1777 bytes for local variables. Maximum is 2048 bytes.
So I simply inserted the pins of the adapter in the pro mini and pressed upload. It worked.