The .pac ROM is available here: http://roms.satechhelp.co.za/product/telefunken-tel-73giqs-firmwarerom/ and below are flashing steps via SPD_Upgrade_Tool_R4.0.0001 which is a lot like ReseachDownloader. Request, download and extract the ROM
- Download the SPD_Upgrade_Tool_R4.0.0001 from here: https://mega.nz/#!bZZUFRhQ!aXSEUrVos-jDYiw8O6MNvIvbZ-ia34QuoUmK2oLiqSo and extract it
- Install the Spreadtrum drivers as per the Guide here
- Then open up the extracted SPD_Upgrade_Tool_R4.0.0001 folder twice > then double-click the file with a black chip and two green arrows icon
- With the flasher loaded > click on the gear icon on the far left > browse to and load the *.pac ROM/firmware file by double clicking on it - it can take up to a minute or two
- Click the button with two gear icons (2nd from the left) > untick both NV_W and NV_WCN items
- Then click the Play like icon (Start Downloading)
- And then connect the TEL-73GIQS tablet with volume down held down
- The downloading should start with a blue bar - at which stage you can release the volume down key > different partitioned will be flashed and you get a green 'Passed' when all is done
- At which stage click the Stop icon (Square)
- Disconnect and power up the TEL-73GIQS
NB. It can take a little longer to boot up after a flash (no more than 5 minutes though).